Serrated grating factory prices generally range from approximately US$15 to US$45 per square meter for basic untreated carbon steel panels, US$25 to US$90 per square meter for standard hot-dip galvanized serrated grating, and US$60 to US$220 per square meter for common stainless steel serrated grating. Cut-to-size, close-mesh, framed, press-locked, heavily fabricated, or heavy-duty products may cost US$100 to US$350 per square meter or more. Engineered serrated grating for forklifts, vehicles, ports, chemical plants, marine platforms, or wide unsupported spans may exceed US$180 to US$500 per square meter. The final factory price depends on the material, serration design, bearing bar height and thickness, bearing bar spacing, cross bar construction, grating weight, manufacturing method, load capacity, panel dimensions, surface treatment, custom fabrication, order quantity, inspection requirements, packaging, and delivery terms.
Serrated grating is an open-grid flooring product manufactured with notches, teeth, or raised anti-slip profiles along the top edges of its bearing bars. The serrations increase contact with footwear and help improve traction where platforms, walkways, stair treads, drainage covers, and maintenance floors may become wet, oily, muddy, greasy, or contaminated by process materials.
The bearing bars are the main structural members. They span between beams, frames, trench ledges, or other supports and carry the imposed load. Cross bars maintain the bearing bar spacing and stabilize the panel. Serrations modify the upper surface of the bearing bars but do not replace the structural function of the bar itself.
Serrated grating may be manufactured from untreated carbon steel, painted carbon steel, hot-dip galvanized steel, 304 stainless steel, 304L stainless steel, 316 stainless steel, 316L stainless steel, or aluminum. The most economical option is normally untreated carbon steel, while hot-dip galvanized steel provides a practical balance between price, structural capacity, and outdoor corrosion protection. Stainless steel has a higher initial price but may be more suitable for food processing, chemical, marine, hygienic, and highly corrosive environments.
The product may be supplied as standard full panels, cut-to-size panels, platform flooring, stair treads, trench covers, drainage grating, framed assemblies, hinged covers, or drawing-based project panels. Each supply form has a different fabrication and pricing basis.
| Supply Form | Typical Included Work | Common Exclusions |
| Standard serrated panel | Factory-produced grating in a standard width, length, mesh, and bearing bar size | Cutting, banding, frames, drawings, clips, and delivery |
| Cut-to-size panel | Rectangular cutting to specified panel dimensions | Four-sided banding, openings, frames, and special surface treatment |
| Fabricated platform panel | Cutting, edge banding, notching, panel marking, and selected finish | Structural supports, installation labor, and local lifting equipment |
| Serrated stair tread | Grating, side carrier plates, fixing holes, and front edge treatment | Stair stringers, handrails, and installation |
| Framed trench cover | Serrated grating, matching support frame, fitting, and specified accessories | Concrete work, drainage channel construction, and site installation |
| Complete project package | Panel drawings, fabrication, treatment, inspection, marking, and packaging | Freight, import duty, tax, and installation unless specifically included |
Factory prices are commonly quoted by square meter, kilogram, ton, panel, stair tread, linear meter, or complete project. A square meter price is useful only when the material, bearing bar size, spacing, unit weight, serration type, and fabrication scope are clearly defined.
A low advertised price usually refers to a standard panel with small bearing bars, common spacing, a large minimum order, and minimal secondary work. It may not include cutting, edge banding, frames, load calculations, surface treatment reports, installation clips, export packaging, or transport.
For preliminary budgeting, serrated grating can be divided into several factory price levels. These ranges are general purchasing references rather than fixed offers. Steel, stainless steel, zinc, energy, labor, exchange rates, order quantity, and delivery conditions can change the final quotation.
| Serrated Grating Type | Typical Factory Price Range | General Description |
| Basic untreated carbon steel serrated grating | US$15–45 per m² | Standard panel, common mesh, limited fabrication, and no permanent coating |
| Painted carbon steel serrated grating | US$20–65 per m² | Carbon steel grating with primer or industrial paint |
| Standard galvanized serrated grating | US$25–90 per m² | Common industrial platforms, walkways, stairs, and drainage covers |
| Fabricated galvanized serrated panels | US$40–140 per m² | Cut-to-size panels with banding, notches, identification, and galvanizing |
| Close-mesh galvanized serrated grating | US$55–170 per m² | Closer bearing bar spacing, more material, and additional welded intersections |
| Medium-duty galvanized serrated grating | US$65–180 per m² | Deeper or thicker bars for carts and repeated industrial traffic |
| Heavy-duty galvanized serrated grating | US$100–300 per m² | Deep and thick bearing bars for high concentrated loads and wider spans |
| 304 stainless steel serrated grating | US$60–170 per m² | General wet, food processing, clean, and corrosive environments |
| 316 or 316L serrated grating | US$80–230 per m² | Marine, coastal, chemical, wastewater, and chloride exposure |
| Press-locked architectural serrated grating | US$110–300 per m² | Accurate mesh, controlled appearance, and specialized fabrication |
| Framed serrated trench covers | US$120–350+ per m² | Grating, reinforced frame, fitting, handles, locks, and treatment |
| Engineered vehicle-rated serrated grating | US$180–500+ per m² | Wheel loading, reinforcement, engineering calculations, and load testing |
A common factory budget for standard hot-dip galvanized serrated grating used on industrial pedestrian platforms is approximately US$25 to US$90 per square meter. When panels are cut according to drawings, banded, notched, galvanized after fabrication, inspected, identified, and export packed, the project-ready price may increase to approximately US$40 to US$140 per square meter.
A 304 stainless steel serrated panel with standard mesh and basic rectangular fabrication may cost approximately US$60 to US$170 per square meter. A comparable 316L panel with close spacing, welded banding, cutouts, pickling, and passivation may cost approximately US$110 to US$260 per square meter.
Heavy-duty grating cannot be priced by adding only a small percentage to standard grating. A heavy panel may contain two or three times the material weight of a pedestrian panel and may require thicker cross bars, heavier banding, reinforced frames, more powerful welding equipment, engineering review, and special lifting arrangements.
A raw panel price normally refers to a standard factory sheet before project-specific fabrication. It may have standard dimensions, open bearing bar ends, and no panel identification.
The raw panel price generally excludes edge banding, irregular cutting, pipe openings, toe plates, stair tread plates, support frames, installation clips, load calculations, and special packaging.
A project-ready panel is produced according to an approved platform, trench, or walkway layout. It may include rectangular or irregular cutting, trim banding, load banding, column notches, pipe openings, toe plates, frames, fixing holes, panel marks, and a specified finish.
These operations can increase the final square meter price by 20 to 100 percent or more, depending on the number of panels and fabrication complexity.
Factory pricing normally assumes a minimum quantity, repeated specifications, production lead time, and shipment from the manufacturing location. Distributor prices are usually higher but may include local inventory, small-quantity supply, immediate delivery, local cutting, and technical support.
Manufacturers often calculate the grating price from its theoretical or actual weight. Raw material, welding, surface treatment, and commercial costs are calculated per kilogram and converted into a square meter price.
Weight-based pricing is useful for standard panels, but complex fabrication must still be added. A small irregular panel may contain less steel than a large rectangular panel but require more labor per kilogram.
The base material has a major effect on initial cost, corrosion resistance, maintenance requirements, surface finish, and expected service life.
Untreated carbon steel is normally the lowest-cost material option. It may be suitable for temporary structures, dry indoor platforms, products receiving site-applied coatings, or projects where corrosion is not a major concern.
Because the steel is unprotected, it can rust quickly when exposed to humidity, rain, washdown water, chemicals, or outdoor weather. Its low initial price may therefore be offset by painting, maintenance, and replacement costs.
Painted serrated grating is used in factories, warehouses, equipment platforms, cable areas, indoor walkways, and controlled industrial environments.
The coating may consist of shop primer, alkyd paint, epoxy, polyurethane, powder coating, or another project-specific system. Price depends on surface preparation, blasting, coating type, number of layers, dry film thickness, curing, color, masking, and inspection.
Hot-dip galvanizing is one of the most common finishes for carbon steel serrated grating. The panel is normally cut, welded, banded, and fabricated before it is immersed in molten zinc.
The zinc coating protects bearing bars, cross bars, serrations, welded intersections, banding bars, and cut edges. Galvanized serrated grating is widely used for outdoor platforms, stair treads, drainage covers, wastewater plants, industrial walkways, power plants, factories, mines, and ports.
Its initial price is higher than bare or lightly painted carbon steel but normally lower than stainless steel of comparable weight and construction.
304 stainless steel provides general resistance to atmospheric corrosion, fresh water, food products, humidity, and many mild cleaning agents.
It is commonly used for food processing platforms, commercial kitchens, architectural walkways, fresh-water drainage, clean manufacturing, and indoor wet areas.
316 and 316L contain molybdenum, which improves resistance to chloride-induced pitting compared with 304. They are used in coastal facilities, marine environments, seafood processing, brine production, wastewater treatment, swimming pool areas, and chemical plants.
316L has a lower maximum carbon content than standard 316 and is frequently selected where extensive welding, banding, framing, or custom fabrication is required.
| Material and Finish | Relative Initial Price | Corrosion Protection | Typical Application |
| Bare carbon steel | Lowest | No permanent coating | Dry indoor, temporary, or site-coated applications |
| Painted carbon steel | Low | Paint or powder coating | Factories, warehouses, and controlled environments |
| Hot-dip galvanized carbon steel | Low to moderate | Zinc coating over fabricated steel | Outdoor platforms, drainage, stairs, and industrial walkways |
| 304 stainless steel | High | Stainless alloy passive surface | Food, clean production, architecture, and ordinary wet service |
| 316 or 316L stainless steel | Highest | Improved resistance to chlorides and many chemicals | Marine, coastal, wastewater, salt, and chemical environments |
| Stainless Steel Grade | Typical Price Relationship |
| 304 | 100% baseline |
| 304L | Approximately 2–12% above comparable 304 |
| 316 | Approximately 15–30% above comparable 304 |
| 316L | Approximately 18–35% above comparable 304 |
The actual premium changes with nickel and molybdenum prices, stainless steel mill surcharges, bar availability, material thickness, regional supply, and order volume.
Galvanized carbon steel normally provides the most economical solution for general outdoor industrial applications. Stainless steel may provide better long-term value where coating repair is difficult, contamination must be controlled, chloride exposure is significant, or repeated chemical cleaning is required.
The comparison should include initial price, installation, coating repair, cleaning, production shutdown, replacement access, expected service life, and environmental exposure.
Serrated grating is not a single universal surface. The shape, depth, spacing, orientation, and manufacturing method of the serrations can differ between factories and product systems.
A common serrated bearing bar has repeated notches cut or formed along its top edge. This is widely used for welded carbon steel and stainless steel grating.
The notches provide additional contact edges under footwear. Production requires a serrating machine, rolling process, stamping process, or pre-serrated bar material.
Fine serrations use smaller and more closely spaced teeth. They may provide more contact points and a less aggressive walking feel than large coarse teeth.
Fine serration can require more detailed tooling and tighter production control.
Coarse serrations use deeper or wider notches. They can be effective where mud, ice, oil, or heavy industrial contamination is present, but they may be less comfortable for thin footwear and more difficult to clean.
Some products use serrations oriented or staggered to improve grip in more than one direction. The exact performance depends on footwear, contamination, load, walking direction, and environmental conditions.
Special anti-slip products may incorporate serrations on bearing bars and additional raised profiles on cross bars. These designs are generally more expensive because of specialized tooling and production steps.
Stair treads may combine serrated bearing bars with a separate perforated, abrasive, or checkered nosing. The nosing provides a visible and slip-resistant front edge but increases fabrication cost.
| Serration Design | Relative Manufacturing Cost | Typical Use |
| Standard notched bearing bar | Low to moderate addition | General wet and industrial walkways |
| Fine-tooth serration | Moderate | Frequent pedestrian traffic and controlled industrial areas |
| Coarse serration | Moderate | Outdoor, muddy, icy, or heavily contaminated locations |
| Multi-directional serration | Moderate to high | Severe anti-slip applications |
| Custom serration profile | High | Project-specific safety or architectural requirements |
| Serrated grating with special nosing | High per tread | Industrial stairways and access systems |
Serrated grating commonly costs approximately 5 to 15 percent more than an otherwise comparable plain grating panel. The premium covers bar serration, additional handling, tooling wear, lower production speed, possible material waste, and inspection.
The percentage may be smaller on heavy-duty grating because raw material weight represents a larger portion of the final price. It may be larger on small orders or special serration profiles because setup cost is divided across fewer panels.
Serrations improve grip but do not make the surface completely slip-proof. Oil, grease, ice, mud, algae, chemicals, food residue, and biological deposits can still create hazardous conditions.
Actual walking safety also depends on footwear, cleaning, drainage, lighting, handrails, slope, maintenance, and work procedures.
Deep serrations can retain grease, fibers, food particles, and cleaning deposits. Food, pharmaceutical, and hygienic facilities should balance traction with cleanability.
Plain grating, fine serrations, perforated anti-slip plate, or another flooring system may be more suitable where frequent sanitation is required.
Hot-dip galvanizing coats the serrated edges. Excess zinc accumulation can reduce the sharpness or consistency of the teeth. Galvanized serrated grating should be inspected for blocked openings, sharp zinc projections, irregular buildup, and panel fit.
The bearing bar dimensions and spacing determine much of the product weight, structural capacity, open area, and factory price.
Bearing bar height is measured vertically. Common metric heights include 20 mm, 25 mm, 30 mm, 32 mm, 35 mm, 40 mm, 45 mm, 50 mm, 60 mm, 65 mm, 75 mm, and larger custom dimensions.
Common inch-based heights include 3/4 inch, 1 inch, 1-1/4 inches, 1-1/2 inches, 1-3/4 inches, 2 inches, 2-1/2 inches, and deeper heavy-duty sections.
Increasing bearing bar height generally improves bending stiffness and span capacity. It also adds material to every bearing bar, increasing raw material and surface treatment cost.
Common thicknesses include 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, 1/8 inch, 3/16 inch, and 1/4 inch.
Increasing thickness improves local strength, impact resistance, durability, and concentrated-load capacity. Because the added thickness applies to every bearing bar, its effect on weight and price can be substantial.
Bearing bar spacing is measured from the center of one bearing bar to the center of the next. Common arrangements include approximately 15 mm, 19 mm, 20 mm, 25 mm, 30 mm, 30.2 mm, 32 mm, 34 mm, 35 mm, and 40 mm.
Closer spacing adds more bearing bars across every meter of panel width. It improves walking support, load distribution, small-wheel performance, and object retention, but increases material consumption and the number of connections.
Cross bars may be twisted square bars, round bars, flat bars, pressed bars, or mechanically locked members. Their size and shape influence panel stability, appearance, manufacturing method, and cost.
Common cross bar spacing includes approximately 50 mm, 76 mm, 100 mm, 2 inches, and 4 inches.
Reducing cross bar spacing increases the number of cross bars and welded or locked intersections. The price effect is usually smaller than changing bearing bar thickness, but it becomes important on large orders.
| Specification Change | Effect on Performance | Typical Price Effect |
| Increase bearing bar height | Improves stiffness and span capacity | Moderate to significant increase |
| Increase bearing bar thickness | Improves strength, impact resistance, and durability | Significant increase |
| Reduce bearing bar spacing | Improves walking support and load distribution | Significant increase |
| Reduce cross bar spacing | Improves panel stability | Small to moderate increase |
| Use heavier cross bars | Improves transverse stability | Small to moderate increase |
| Add serrations | Improves traction | Approximately 5–15% in many standard cases |
Theoretical weight per square meter is one of the most useful values for comparing quotations. Two panels with the same length and width can contain very different quantities of steel.
| General Construction | Weight Direction | Price Direction |
| Shallow, thin, wide-spaced grating | Low kg/m² | Lowest |
| Standard pedestrian grating | Moderate kg/m² | Moderate |
| Close-mesh or thick-bar grating | High kg/m² | High |
| Heavy-duty industrial grating | Very high kg/m² | Very high |
| Heavy grating with frame and toe plates | Highest system weight | Highest material and freight cost |
A lower quotation may result from smaller bearing bars, wider spacing, smaller cross bars, lighter banding, or an excluded frame. Buyers should request the theoretical unit weight and total shipment weight.
A price calculated only by kilogram does not fully represent custom fabrication. A small curved panel with several openings may have a higher price per kilogram than a large rectangular panel because of drawing, cutting, fitting, banding, and inspection work.
The manufacturing method affects connection design, appearance, production speed, available spacing, material options, and price.
Welded grating is produced by placing cross bars perpendicular to the bearing bars and joining the intersections through resistance welding, pressure welding, forge welding, or another controlled welding process.
It is the most common construction for carbon steel and stainless steel industrial grating. Standard welded serrated panels can be produced efficiently in large quantities, making them a practical option for platforms, walkways, stair treads, drainage covers, and trench covers.
After the main panel is produced, it can be cut, banded, notched, framed, painted, galvanized, pickled, or passivated.
Press-locked grating is manufactured by pressing cross bars into slots formed in the bearing bars. The structure produces accurate rectangular openings and a clean visual appearance.
Serrated bearing bars can be used when additional traction is required. The combination of slotting, serrating, alignment, and pressing makes press-locked serrated grating more expensive than many standard welded products.
It is commonly used for architectural walkways, public access areas, visible industrial floors, facades, entrance grilles, and close-mesh applications.
Swage-locked grating uses cross bars inserted through the bearing bars and mechanically locked through pressure or deformation. It is commonly available in stainless steel and aluminum, although exact serrated options depend on the manufacturer.
The price depends on bar profile, material, spacing, locking process, production quantity, and fabrication requirements.
| Manufacturing Method | Relative Factory Price | Main Advantages | Typical Use |
| Welded serrated grating | Low to moderate | Strong, economical, widely available, and efficient | Industrial platforms, stairs, drainage, and trench covers |
| Press-locked serrated grating | Moderate to high | Accurate grid, architectural appearance, and close mesh | Public walkways, entrances, facades, and visible platforms |
| Swage-locked serrated grating | Moderate | Mechanically locked construction and clean appearance | Stainless steel, aluminum, marine, and architectural applications |
| Custom hand-fabricated grating | High | Supports unusual profiles, dimensions, and replacement work | Special machinery, curved floors, and low-volume projects |
A light press-locked serrated panel can cost less than a heavy-duty welded panel. Construction method should therefore be compared together with material grade, bearing bar size, mesh, panel weight, finish, and quantity.
Terms such as light duty, standard duty, and heavy duty provide a general description but do not replace structural load information. The factory still requires the support span, uniform load, concentrated load, wheel load, contact area, and allowable deflection.
Light-duty grating is used for pedestrian access, ventilation areas, narrow drainage covers, rooftop walkways, inspection platforms, and short unsupported spans.
It normally uses shallow or thin bearing bars and falls near the lower end of the factory price range.
Standard-duty grating is commonly used for industrial platforms, walkways, stair treads, mezzanines, catwalks, and drainage systems.
It provides a balance between load capacity, material weight, availability, and cost. Bearing bar selection must still be based on the actual span.
Medium-duty products may support loaded carts, maintenance equipment, industrial tools, and repeated personnel traffic. They generally require deeper or thicker bars and stronger edge banding.
Heavy-duty grating is designed for forklifts, cars, trucks, industrial vehicles, loading areas, ports, docks, and high concentrated loads.
It may use deep bearing bars, thick sections, close spacing, heavy cross bars, reinforced frames, load banding, and mechanical locking systems.
| Duty Level | Typical Application | General Carbon or Galvanized Steel Price |
| Light duty | Pedestrians, inspection access, and narrow drainage covers | US$15–55 per m² |
| Standard duty | Walkways, platforms, stairs, and industrial drainage | US$25–100 per m² |
| Medium duty | Carts, maintenance equipment, and repeated industrial traffic | US$55–180 per m² |
| Heavy duty | Forklifts, cars, loading zones, and high point loads | US$100–300 per m² |
| Engineered traffic duty | Trucks, ports, roads, and specialized industrial vehicles | US$180–500+ per m² |
The support span is the unsupported distance between beams, frames, or trench ledges. Increasing the span significantly increases bending stress and deflection.
A bearing bar that performs well across a 500 mm span may not be suitable across a 1,200 mm span under the same load. Longer spans normally require deeper bearing bars and a higher price.
Uniform loading is distributed over the grating area and may represent workers, stored materials, snow, or a specified floor load.
Concentrated loads include equipment feet, tool boxes, machinery supports, and isolated heavy components. A panel designed for pedestrian uniform loading may not be suitable for a large point load.
Small hard wheels can place high local stress on individual bearing bars. Forklifts, pallet trucks, carts, and vehicles require evaluation of the maximum wheel load and contact area.
A grating panel can remain below its material strength limit and still deflect too much for safe or comfortable use. Excessive deflection can create rocking, noise, joint movement, trip hazards, and fatigue.
| Load Information | Effect on Product Selection and Price |
| Longer span | Requires deeper or thicker bearing bars |
| Higher uniform load | Increases the required structural section |
| High concentrated load | May require close spacing or local reinforcement |
| Small wheel contact | May require more bearing bars beneath each wheel |
| Strict deflection limit | Can require a stiffer panel than strength alone requires |
| Impact and vibration | May require heavier frames, clips, and fatigue control |
Standard factory panels normally have the lowest price because they use established bearing bar sizes, mesh arrangements, panel widths, panel lengths, welding programs, and packing methods.
Standard panels are suitable for distributors, local fabricators, and projects capable of completing cutting and fitting near the installation site.
They require minimal secondary fabrication and usually provide the lowest square meter price.
Cut-to-length panels require cutting, handling, deburring, identification, and optional banding. The price is higher than a complete stock sheet but may reduce site labor and waste.
Custom widths can create unused remainder strips when cut from standard panels. The factory may also need to adjust the bearing bar layout to avoid an excessively large edge opening.
Small panels have more perimeter per square meter. Each panel may require four-sided banding, welding, inspection, identification, and separate handling.
Ten square meters divided into ten large panels generally costs less to fabricate than ten square meters divided into one hundred small trench covers.
Triangular, curved, trapezoidal, tapered, circular, and multi-cutout panels require additional drawing review, cutting, fitting, banding, welding, straightening, and inspection.
| Panel Type | Relative Price per Square Meter | Main Reason |
| Standard full panel | Lowest | Efficient production and minimal fabrication |
| Standard rectangular cut panel | Low to moderate | Cutting, identification, and optional banding |
| Custom-width rectangular panel | Moderate | Special layout and possible material waste |
| Small removable panel | High | High perimeter and fabrication work relative to area |
| Irregular or curved panel | High | Complex drawings, cutting, fitting, and banding |
| Complete framed assembly | High to very high | Grating, frame, fitting, accessories, and trial assembly |
Using repeated rectangular panel dimensions can reduce drawing work, machine setup, material waste, identification errors, packaging complexity, and installation time.
Structural support layouts can often be coordinated with standard grating modules to reduce special-shaped infill panels.
Surface treatment affects corrosion resistance, appearance, maintenance, cleanability, and price.
Bare carbon steel is the lowest-cost option. It may be supplied for temporary use, dry indoor facilities, or projects where coating will be applied locally.
A shop primer provides temporary protection during transport, storage, and construction. It is not normally a complete long-term coating system for outdoor or wet service.
Painted grating may receive an alkyd, epoxy, polyurethane, powder-coated, or other specified finish.
Cost depends on blasting, cleaning, coating type, color, number of layers, dry film thickness, curing, masking, and inspection.
Hot-dip galvanizing is normally applied after cutting, banding, notching, and welding. This allows the zinc coating to protect fabricated surfaces and welded connections.
The galvanizing price depends on panel weight, zinc price, product dimensions, minimum batch charges, steel chemistry, coating standard, inspection, and packing.
Project specifications may refer to standards such as ASTM A123/A123M, EN ISO 1461, or another regional hot-dip galvanizing requirement.
Pickling removes welding heat tint, oxide scale, and certain metallic contaminants from stainless steel. It is commonly specified for welded grating used in marine, chemical, food processing, and wet environments.
Passivation removes free iron contamination and supports formation of the natural chromium-rich passive surface. The grating must be properly cleaned before passivation.
Polishing improves appearance and can assist cleaning, but serrated grating is difficult to polish uniformly. The teeth, intersections, internal spaces, and welded areas require substantial labor.
| Surface Treatment | Relative Cost | Typical Application |
| Bare carbon steel | Lowest | Dry indoor, temporary, or site-coated use |
| Shop primer | Low | Temporary protection and indoor construction |
| Industrial painted system | Low to moderate | Factories, warehouses, and color-coded areas |
| Hot-dip galvanizing | Moderate | Outdoor, wet, industrial, and drainage applications |
| Duplex galvanized and painted | High | Severe outdoor, coastal, and long-service environments |
| Stainless steel pickling | Low to moderate addition | Marine, chemical, food, and wet-area stainless grating |
| Pickling and passivation | Moderate addition | Hygienic and corrosion-sensitive stainless steel products |
| Detailed polishing | High addition | Architectural, food, pharmaceutical, and visible applications |
| Treatment | Possible Addition to Base Price |
| Shop primer | Approximately 3–8% |
| Industrial paint system | Approximately 8–25% |
| Hot-dip galvanizing | Approximately 10–30%, depending strongly on weight and batch size |
| Duplex coating | Approximately 25–60% or project-specific |
| Stainless steel pickling | Approximately 5–12% |
| Pickling and passivation | Approximately 8–18% |
| Detailed polishing | Approximately 20–50% or more |
These percentages are preliminary references. Actual charges depend on product weight, dimensions, batch quantity, surface condition, coating specification, treatment provider, and inspection requirements.
Secondary fabrication converts standard grating panels into installation-ready products. It can represent a substantial part of the final factory price.
Straight cutting is normally the simplest custom operation. Cost depends on material, bearing bar size, cutting method, panel quantity, and required tolerance.
Banding bars close exposed bearing bar ends. They improve handling, appearance, edge safety, local stiffness, and panel fit.
Trim banding closes the edge but is not necessarily designed to transfer a major structural load.
Load banding uses a larger section and stronger welds. It may be required where wheels cross panel joints, where the panel edge carries a concentrated load, or where the banding transfers load to a support.
Notches allow panels to fit around beams, columns, walls, pipes, handrails, equipment legs, and structural braces.
Each notch requires accurate positioning, cutting, edge finishing, possible banding, and dimensional inspection.
Round, square, rectangular, and irregular openings may be required for pipes, valves, drains, cable trays, ducts, machine supports, and access points.
Openings that interrupt several bearing bars may require structural banding or additional support steel.
Toe plates may be welded around platform edges to reduce the risk of tools and materials falling. Their price depends on plate height, thickness, total length, corner details, welding, and treatment.
Frames may be made from angle, channel, flat bar, or formed sections. They provide seating for removable grating and protect trench or floor-opening edges.
Serrated stair treads normally include carrier plates, mounting holes, banded edges, and a front nosing. Each tread requires more fabrication per square meter than a large platform panel.
Access covers may require hinges, recessed handles, lifting slots, anti-theft devices, bolts, or locking systems. These features increase per-panel fabrication cost.
| Fabrication Item | Typical Price Effect |
| Simple rectangular cutting | Small increase |
| Two-sided trim banding | Small increase |
| Four-sided trim banding | Small to moderate increase |
| Heavy load banding | Moderate increase |
| Simple notch | Small increase per notch |
| Multiple irregular openings | Moderate to significant increase |
| Toe plates | Moderate increase according to total length |
| Matching support frame | Moderate to significant increase |
| Stair tread plates and nosing | Moderate increase per tread |
| Hinge, handle, or lock | Moderate increase per access panel |
| Curved or irregular panel | Significant increase |
Custom fabrication is often charged by operation and panel rather than only by square meter. An order containing many small covers can have a high unit price even when the total area is limited.
Carbon steel panels should normally be cut, banded, drilled, and welded before hot-dip galvanizing. Post-galvanizing cutting or welding damages the zinc coating and requires an approved repair.
Stainless steel grating should be fabricated using clean tools, worktables, abrasives, and handling equipment. Carbon steel contamination can create rust-colored staining and localized corrosion.
A serrated grating factory should have production equipment suitable for the required material, bearing bar size, serration, construction method, panel dimensions, fabrication complexity, and order volume.
The factory should control bar material, width, thickness, straightness, edge quality, and serration profile. Equipment may include slitting lines, flat-bar rolling, straightening, cutting, and serration-forming machines.
Consistent serrations require controlled tooling. The factory should be able to maintain tooth depth, spacing, shape, and alignment along the full bearing bar length.
Worn tooling can create inconsistent serrations, cracks, burrs, or flattened teeth.
Automatic or controlled welding lines improve bearing bar spacing, cross bar alignment, intersection consistency, panel squareness, and production output.
Heavy-duty grating requires equipment capable of handling thick bearing bars, high welding energy, large cross bars, and heavy panels.
Press-locked grating requires accurate slotting, punching, bar positioning, and hydraulic pressing. Serrated bearing bars add another preparation step.
Swage-locked grating requires cross bar insertion and mechanical locking equipment. Availability of serrated profiles should be confirmed with the manufacturer.
Custom production may require saw cutting, plasma cutting, CNC cutting, grinding, drilling, welding, frame fabrication, stair tread production, and panel straightening.
The factory may operate galvanizing, painting, pickling, passivation, or polishing facilities or coordinate with qualified subcontractors. The grating manufacturer should remain responsible for final product quality.
Large platform and trench-cover projects require panel layouts, fabrication drawings, stair tread schedules, frame drawings, and bearing bar direction.
A capable factory should identify missing dimensions, unsupported edges, unsuitable panel sizes, and possible installation conflicts before production begins.
Monthly production capacity should be evaluated according to the actual product. A factory may have high output for standard welded panels but lower capacity for heavy-duty, press-locked, stainless steel, or extensively fabricated grating.
| Factory Capability | Why It Matters |
| Serration-forming equipment | Controls tooth shape, depth, spacing, and consistency |
| Automatic welded grating line | Improves spacing, welding consistency, and production output |
| Heavy-duty welding equipment | Supports thick bearing bars and high-load grating |
| Press-locking equipment | Allows architectural and close-mesh serrated grating |
| Swage-locking equipment | Supports mechanically locked stainless steel or aluminum products |
| CNC cutting and fabrication | Improves repeatability for custom panel schedules |
| Frame and stair tread fabrication | Allows complete installation-ready assemblies |
| Surface treatment access | Supports galvanizing, painting, pickling, and passivation |
| Drawing and engineering team | Reduces specification and installation errors |
| Inspection equipment | Supports serration, welding, dimensions, coating, and load checks |
A custom factory may offer non-standard bar sizes, close mesh, special cross bars, unusual serrations, curved panels, tapered panels, stair treads, frames, toe plates, handles, hinges, and locking systems.
Buyers should confirm whether the factory can manufacture the requested product directly or will source it from another producer.
Production lead time normally includes drawing approval, raw material purchasing, serrated bar preparation, main panel production, cutting, fabrication, treatment, inspection, marking, and packaging.
| Order Type | Delivery Time Direction |
| Standard carbon steel panels | Shortest when material and serrated bars are in stock |
| Cut-to-size galvanized panels | Moderate due to fabrication and galvanizing |
| Custom platform panel schedule | Longer due to drawings, panel marking, and multiple operations |
| Press-locked serrated grating | Depends on tooling, mesh, quantity, and treatment |
| Heavy-duty vehicle grating | Longer due to material, engineering, welding, and testing |
| Polished stainless steel grating | Additional time for surface finishing and protective packaging |
Quality control should begin with raw material inspection and continue through serration forming, main panel production, secondary fabrication, surface treatment, final inspection, marking, and packaging.
The factory should confirm the carbon steel, stainless steel, or aluminum grade. Material certificates may be required to show chemical composition, mechanical properties, heat number, and applicable standard.
For stainless steel, positive material identification may be requested to distinguish 304, 316, 316L, and other alloys.
Serration depth, spacing, tooth shape, alignment, and consistency should be checked along the bearing bars.
Inspectors should look for flattened teeth, cracks, torn edges, loose burrs, inconsistent spacing, and areas damaged during welding, straightening, cutting, or surface treatment.
Bearing bar height, thickness, straightness, spacing, and orientation should be checked against the order.
Cross bar size, spacing, alignment, and connection quality should be inspected at multiple panel locations.
Welded intersections should be checked for secure attachment, missed welds, incomplete fusion, cracking, excessive burn-through, and unacceptable bearing bar deformation.
Secondary welds around banding, frames, toe plates, stair tread plates, handles, hinges, and reinforcement require separate inspection.
Overall length, width, diagonal dimensions, bearing bar direction, openings, notches, frames, stair tread holes, and panel marks should be checked against approved drawings.
Welding, serrating, cutting, galvanizing, and secondary fabrication can introduce distortion. Panels should sit on their supports without excessive rocking.
Painted products may require checks for surface preparation, coating thickness, coverage, color, and damage. Galvanized products may require coating thickness measurements, drainage inspection, and removal of unsafe zinc projections.
Stainless steel products may require inspection for heat tint, embedded iron contamination, scratches, pickling, passivation, and polishing quality.
Load calculations should identify the material, bearing bar size, spacing, clear span, uniform load, concentrated load, wheel load, contact area, and allowable deflection.
Physical testing may be required for custom vehicle grating, special frames, new profiles, public infrastructure, unusual spans, or products without established load data.
The test should define the support arrangement, load position, contact area, loading steps, measured deflection, permanent deformation, and acceptance criteria.
| Quality Control Item | Inspection Requirement |
| Material grade | Confirm certificates and PMI when required |
| Serration profile | Check tooth depth, spacing, consistency, damage, and burrs |
| Bearing bar size | Measure height and thickness |
| Bar spacing | Verify bearing bar and cross bar center spacing |
| Weld integrity | Inspect primary intersections and secondary fabrication welds |
| Panel dimensions | Check length, width, diagonals, openings, and panel marks |
| Flatness | Check warping, rocking, and twisted bearing bars |
| Surface treatment | Verify paint, zinc, pickling, passivation, or polishing |
| Load performance | Review load calculations or physical tests |
| Packaging | Protect serrations, coating, markings, and accessories |
| Document | Main Purpose |
| Material certificate | Confirms steel or stainless steel grade and properties |
| PMI report | Verifies stainless steel alloy identity |
| Dimensional report | Records panel sizes, bar dimensions, spacing, and openings |
| Serration inspection record | Documents tooth profile and consistency |
| Welding inspection record | Documents primary and secondary weld checks |
| Coating or surface report | Records galvanizing, painting, pickling, or passivation |
| Load calculation | Shows the basis for bearing bar selection |
| Load test report | Records test conditions, loading, deflection, and results |
| Packing list and panel schedule | Links shipped panels to installation drawings |
Inspection and documentation requirements should be included in the original inquiry. Adding PMI, third-party inspection, load testing, or special reports after production can increase cost and delay delivery.
Order quantity affects material purchasing, serration setup, welding efficiency, custom fabrication, surface treatment, inspection, packaging, and unit price.
A prototype panel normally has the highest unit price because drawing review, material preparation, serration setup, welding, fabrication, treatment, inspection, and packaging cannot be distributed across a production batch.
Small orders may be subject to minimum charges for raw material purchasing, serrating, welding, galvanizing, pickling, passivation, painting, inspection, and export packaging.
Repeated bar sizes, meshes, and panel dimensions improve production efficiency. Setup, drawings, and material waste are distributed across more panels.
Large orders using one material, bearing bar size, serration, mesh, and finish generally receive the best factory price.
A large project containing hundreds of unique panels may still have a high fabrication price because each piece requires individual drawings, programming, marking, and inspection.
| Order Size | Typical Unit Price Effect |
| Prototype or one panel | Highest unit price |
| Below 20 m² | Small-order pricing and minimum charges |
| 20–100 m² | Improved factory efficiency |
| 101–500 m² | Competitive project pricing |
| 501–2,000 m² | Potential volume discount |
| More than 2,000 m² | Best efficiency when specifications and panel dimensions are repeated |
Carbon steel prices are affected by iron ore, coking coal, scrap, energy, freight, mill output, construction demand, and regional trade conditions.
Factories may limit quotation validity when steel prices are volatile.
Stainless steel prices are influenced by nickel, chromium, molybdenum, scrap, energy, alloy surcharges, and regional availability.
316 and 316L can be more sensitive to nickel and molybdenum price changes than 304.
The price of zinc affects hot-dip galvanizing charges. Heavy panels and large projects use more zinc in total and may be more sensitive to zinc-market changes.
Galvanized carbon steel panels may be stacked and strapped into bundles. Fabricated panels may require pallets, timber supports, separators, edge protection, panel tags, and packing lists.
Stainless steel, painted, polished, or architectural grating requires additional protection against scratches, carbon steel contamination, coating damage, and moisture.
Aggressive serrations can damage adjacent painted or polished products if panels move during shipment. Separators and secure bundling may be required.
Each custom panel should have a mark linked to the approved installation layout. Bundle labels should remain visible after packing.
Grating is heavy. A project containing 500 square meters at 40 kg per square meter has a net grating weight of approximately 20 tonnes before frames, toe plates, clips, and packaging are added.
Long panels may create oversize transport problems even when their weight is acceptable. Shorter panels are easier to ship but require more cutting, banding, joints, clips, and identification.
Air freight is normally practical only for urgent samples, clips, stair treads, or small replacement panels because grating has a high weight-to-value ratio.
Sea freight is generally economical for large export orders. The manufacturer should provide package dimensions, net weight, gross weight, package quantity, and a container-loading plan.
| Trade Term | General Price Scope |
| EXW | Product available at the factory |
| FOB | Product and export delivery to the named port are generally included |
| CIF | FOB scope plus ocean freight and insurance to the destination port |
| DAP | Delivery to the named destination, normally excluding import duty and tax |
| DDP | Delivery including agreed import clearance, duty, and taxes |
An EXW factory price should not be compared directly with a DDP delivered price. Buyers should compare the complete landed cost using the same commercial terms.
A preliminary budget can be calculated by multiplying the total grating area by an estimated square meter rate and adding fabrication, surface treatment, accessories, packaging, and freight.
Basic grating cost = total grating area × estimated price per square meter
Estimated project cost = basic grating cost + cutting + banding + frames + accessories + surface treatment + inspection + packaging + freight
| Item | Example Value |
| Total area | 100 m² |
| Estimated standard-duty price | US$60 per m² |
| Basic grating cost | 100 × US$60 = US$6,000 |
| Cutting, banding, and panel marking | Approximately US$1,000–1,800 |
| Clips and export packaging | Approximately US$450–850 |
| Preliminary product total | Approximately US$7,450–8,650 before freight |
| Item | Example Value |
| Total area | 50 m² |
| Estimated fabricated 316L price | US$180 per m² |
| Basic grating cost | 50 × US$180 = US$9,000 |
| Openings, toe plates, and banding | Approximately US$1,800–3,000 |
| Pickling, passivation, and packaging | Approximately US$900–1,600 |
| Preliminary product total | Approximately US$11,700–13,600 before freight |
| Item | Example Value |
| Total grating area | 20 m² |
| Estimated heavy-duty grating price | US$220 per m² |
| Basic grating cost | 20 × US$220 = US$4,400 |
| Reinforced frames | Approximately US$2,000–3,500 |
| Handles, locks, testing, and packaging | Approximately US$900–1,600 |
| Preliminary product total | Approximately US$7,300–9,500 before freight |
These examples are budgeting methods rather than final quotations. The bearing bar and frame design must be confirmed from the actual span and loading before the final price is issued.
Two factory quotations may differ substantially because they are based on different materials, weights, serration profiles, fabrication scopes, inspection requirements, or delivery terms.
| Possible Difference | Effect on Price or Performance |
| Smaller bearing bars | Lower weight, lower price, and lower load capacity |
| Wider bearing bar spacing | Fewer bars, lower cost, and larger openings |
| Different serration profile | Changes tooling, traction, cleaning, and production cost |
| Raw panels instead of fabricated panels | Cutting, banding, openings, and marking are excluded |
| Trim banding instead of load banding | Lower cost but different edge performance |
| Frame excluded | Trench-cover quotation appears substantially lower |
| Painting instead of galvanizing | Lower initial cost but different corrosion protection |
| 304 instead of 316L | Lower price but different chloride resistance |
| No load calculation | Engineering and verification costs are excluded |
| Different panel quantity | Many small panels require more fabrication per square meter |
| Different inspection documents | Certificates, testing, and third-party inspection add cost |
| Different trade terms | Freight, duty, tax, and local delivery vary |
A useful comparison should include the material grade, bearing bar height and thickness, bearing bar spacing, cross bar type and spacing, serration profile, theoretical weight, panel dimensions, fabrication, surface treatment, load basis, inspection, packaging, and delivery term.
A complete inquiry allows the factory to calculate material weight, serration preparation, load capacity, production time, custom fabrication, treatment, inspection, packaging, and delivery.
| Required Information | Example |
| Application | Platform, walkway, stair tread, drainage cover, trench cover, or vehicle floor |
| Material | Carbon steel, galvanized steel, 304 stainless steel, or 316L stainless steel |
| Construction method | Welded, press-locked, or swage-locked |
| Serration type | Standard, fine, coarse, directional, or custom profile |
| Bearing bar size | For example, 30 × 3 mm or 40 × 5 mm |
| Bearing bar spacing | For example, 30 mm on center |
| Cross bar type | Twisted square, round, flat, pressed, or swaged bar |
| Cross bar spacing | For example, 50 mm or 100 mm on center |
| Panel dimensions | Length and width of every individual panel type |
| Bearing bar direction | Clearly shown on the fabrication drawing |
| Clear support span | Unsupported distance between structural supports |
| Uniform load | Required distributed floor loading |
| Concentrated load | Maximum point load and contact area |
| Wheel load | Wheel load, width, spacing, and direction of travel |
| Allowable deflection | Project or standard requirement |
| Edge treatment | Open edge, trim banding, or load banding |
| Custom fabrication | Notches, openings, curves, frames, toe plates, handles, or locks |
| Surface treatment | Bare, painted, galvanized, pickled, passivated, or polished |
| Panel quantity | Quantity of each panel size and total square meters |
| Installation accessories | Clips, bolts, anchors, stair tread fasteners, or lifting tools |
| Inspection requirements | Material certificates, PMI, weld report, coating report, or load test |
| Packaging | Standard bundle, pallet, wooden case, or seaworthy export packing |
| Delivery destination | City, port, and country |
| Trade term | EXW, FOB, CIF, DAP, or DDP |
Total square meters do not show how many cuts, banded edges, openings, frames, and panel marks are required. The factory should receive a panel schedule listing every size and quantity.
The layout should show support beams, trench ledges, panel divisions, columns, pipes, stairs, frames, openings, and bearing bar direction.
Descriptions such as pedestrian, standard duty, or heavy duty are not sufficient for final structural selection. The supplier should receive the clear span, uniform load, concentrated load, wheel load, contact area, and allowable deflection.
The inquiry should identify whether a standard factory serration is acceptable or whether a particular tooth depth, spacing, direction, or anti-slip performance is required.
Carbon steel inquiries should identify whether the grating is required bare, painted, powder coated, hot-dip galvanized, or duplex coated. Stainless steel inquiries should identify whether mill finish, pickling, passivation, brushing, or polishing is required.
The buyer should confirm whether the price includes drawings, engineering, serrated bars, cutting, banding, frames, stair tread plates, clips, surface treatment, inspection, packaging, freight, import duty, and tax.
How much does serrated steel grating cost per square meter?
Basic untreated carbon steel serrated grating generally costs approximately US$15 to US$45 per square meter for factory quantities. Standard hot-dip galvanized serrated grating commonly costs approximately US$25 to US$90 per square meter, while fabricated panels may cost US$40 to US$140 per square meter. Stainless steel, close-mesh, framed, or heavy-duty serrated grating can range from approximately US$60 to more than US$500 per square meter, depending on material, weight, fabrication, load requirements, and delivery terms.
Is serrated grating more expensive than plain grating?
Yes. Serrated grating is commonly approximately 5 to 15 percent more expensive than otherwise comparable plain grating because the bearing bars require an additional serration-forming process. The exact premium depends on the material, bearing bar size, tooth profile, order quantity, manufacturing method, and whether serrated bars are available from stock.
What information is needed to get an accurate serrated grating factory price?
An accurate quotation normally requires the material grade, construction method, serration profile, bearing bar height and thickness, bearing bar spacing, cross bar type and spacing, individual panel dimensions, bearing bar direction, support span, uniform and concentrated loads, wheel loading, allowable deflection, edge banding, openings, frames, surface treatment, panel quantity, inspection documents, packaging, destination, and trade term. Fabrication drawings and actual load information provide the most reliable basis for factory pricing.
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