19W2 steel grating is a welded bar grating pattern with bearing bars spaced at 1-3/16 inches on center and cross bars spaced at 2 inches on center. It is a closer cross-bar version of standard 19W4 grating, making the panel denser in one direction while retaining the same primary bearing-bar spacing. 19W2 is commonly selected for industrial flooring, walkways, platforms, carts, maintenance routes, stair landings, and applications where a tighter surface pattern is preferred. The final price depends on bearing-bar depth and thickness, steel grade, surface type, galvanizing, finished weight, fabrication details, panel size, order quantity, packing, and delivery terms.
19W2 is an industry designation that describes welded steel bar grating spacing and construction. It does not describe the complete bearing-bar size, material grade, load capacity, panel dimensions, or finish.
| Designation Element | Meaning | Practical Effect |
|---|---|---|
| 19 | Bearing bars at 19/16 inch centers | Approximately 1-3/16 inches or 30.16 mm center to center |
| W | Welded steel grating construction | Cross bars are welded to the bearing bars |
| 2 | Cross bars at 2 inch centers | Approximately 50.8 mm center to center |
A complete 19W2 specification should include the bearing-bar size. For example:
Welded steel bar grating, 19W2 spacing, 1-1/4 inch × 3/16 inch bearing bars, plain surface, carbon steel, hot-dip galvanized after fabrication, cut and banded to approved drawings.
The 19W2 mesh remains the same even when the bearing bars change from 1 inch × 1/8 inch to 1-1/2 inch × 3/16 inch. However, the weight, clear span, deflection, load capacity, and factory price can change significantly.
19W2 has bearing bars at 1-3/16 inch centers and cross bars at 2 inch centers. The dimensions are measured center to center.
| Spacing Item | Imperial Dimension | Approximate Metric Dimension |
|---|---|---|
| Bearing-bar spacing | 1-3/16 in center to center | 30.16 mm center to center |
| Cross-bar spacing | 2 in center to center | 50.8 mm center to center |
| Typical bearing-bar thickness | 1/8 in or 3/16 in | About 3.2 mm or 4.8 mm |
| Typical bearing-bar depth | 3/4 in to 2 in or more | About 19 mm to 51 mm or more |
The bearing bars are the main load-carrying members. They must run between supports in the span direction. The cross bars run perpendicular to the bearing bars and help form a stable one-piece panel.
The 19W2 code does not mean that the clear opening is 1-3/16 inches by 2 inches. Clear openings are smaller because the bars themselves occupy part of the mesh area. For example, a 19W2 panel with 3/16 inch thick bearing bars has an approximate clear opening between bearing bars of about 1 inch before cross-bar geometry is considered.
19W2 and 19W4 use the same 1-3/16 inch bearing-bar spacing. The main difference is the cross-bar spacing: 19W2 has cross bars every 2 inches, while 19W4 has cross bars every 4 inches.
| Comparison Item | 19W2 Grating | 19W4 Grating |
|---|---|---|
| Bearing-bar spacing | 1-3/16 in on center | 1-3/16 in on center |
| Cross-bar spacing | 2 in on center | 4 in on center |
| Mesh pattern | Closer transverse pattern | More open standard industrial pattern |
| Cross-bar quantity | Higher | Lower |
| Panel weight | Usually slightly higher | Usually lower for the same bearing-bar size |
| Open area | Lower | Higher |
| Factory price | Usually higher | Usually more economical |
| Typical use | Small-opening industrial flooring, cart routes, denser work surfaces | General walkways, platforms, catwalks, and drainage floors |
Because 19W2 has twice as many cross bars as 19W4 over the same panel length, it normally uses more steel and more welding or locking work. It can provide a denser surface feel and improved transverse panel integrity, but it does not automatically double the primary span capacity.
The bearing bars remain at the same 1-3/16 inch centers in both patterns. Bearing-bar size, clear span, load type, and support condition still determine the main structural performance.
19W2 grating is often selected where a closer cross-bar pattern is preferred for industrial movement, equipment access, or a tighter flooring appearance. It can be useful in areas where a 4-inch cross-bar pattern feels too open or where a more frequent transverse support pattern is desired.
Typical applications include:
19W2 can improve the surface pattern for some cart and wheel directions, but it does not solve every small-wheel issue. The 1-3/16 inch bearing-bar spacing remains unchanged from 19W4, so wheel size, travel direction, clear opening, wheel material, load, and floor layout should still be reviewed.
For very small wheels, narrow heels, public pedestrian routes, or applications requiring controlled openings, a closer bearing-bar spacing such as 15W2, 11W2, or another purpose-designed close-mesh grating may be more appropriate than 19W2.
19W2 grating can be made with many bearing-bar sizes. The right section depends on span, load, deflection limit, material grade, service conditions, and whether the surface is smooth or serrated.
| Bearing-Bar Size | Approximate Metric Size | Typical Use |
|---|---|---|
| 3/4 in × 1/8 in | 19 mm × 3.2 mm | Light-duty access panels and short-span pedestrian flooring |
| 1 in × 1/8 in | 25 mm × 3.2 mm | Short-span walkways and light industrial access |
| 1 in × 3/16 in | 25 mm × 4.8 mm | Light to medium industrial flooring |
| 1-1/4 in × 1/8 in | 32 mm × 3.2 mm | General industrial walkways with controlled spans |
| 1-1/4 in × 3/16 in | 32 mm × 4.8 mm | Common industrial platform and access-floor specification |
| 1-1/2 in × 3/16 in | 38 mm × 4.8 mm | Longer spans, lower deflection, higher industrial loads |
| 1-1/2 in × 1/4 in | 38 mm × 6.4 mm | Medium to heavy industrial service |
| 2 in × 1/4 in or larger | 51 mm × 6.4 mm or larger | Heavy-duty platforms, high concentrated loads, engineered applications |
Increasing bearing-bar depth is usually the most effective way to reduce deflection over a longer span. Increasing bearing-bar thickness also improves strength and stiffness, but it increases the steel weight and factory cost.
A 19W2 panel with 1-1/4 inch × 3/16 inch bearing bars is not automatically suitable for every industrial platform. It may be appropriate for a standard pedestrian span, but a longer span, heavier machinery, forklift route, or concentrated wheel load may require deeper and thicker bearing bars.
19W2 grating remains an open-grid product, but it has less open area than 19W4 because it uses cross bars at 2-inch centers instead of 4-inch centers. This can help create a denser flooring pattern, although it also means slightly more material and potentially more places for fine debris to collect.
| Performance Item | 19W2 Grating Characteristic | Design Consideration |
|---|---|---|
| Drainage | Good open-grid drainage for many industrial applications | Drain channel design, slope, and cleaning still control actual performance |
| Ventilation | Allows airflow through elevated floors | Confirm required free area for ventilation installations |
| Light transmission | Allows light through the panel | Closer cross bars create slightly more shadow than 19W4 |
| Debris retention | May retain more fine debris than a more open pattern | Cleaning frequency and debris type should be considered |
| Small-object control | Closer cross bars reduce one direction of opening | Bearing-bar opening remains the same as 19W4 |
For wet outdoor platforms, drainage is improved when the grating remains clear of leaves, mud, welding debris, plastic wrapping, and process residue. A dense mesh cannot compensate for blocked drainage channels or poor housekeeping.
Where tools, bolts, or small components falling to lower levels create a hazard, toe plates, lower screens, secondary mesh, tool lanyards, or work-control procedures may be required. The 19W2 pattern alone is not a complete dropped-object prevention system.
19W2 grating is commonly supplied as standard stock panels and then cut into project-specific floor sections. Stock sizes vary by region and manufacturer, but common industrial panel formats include 2-foot, 3-foot, and 4-foot widths with lengths around 20 feet or 24 feet.
| Common Panel Format | Typical Use | Practical Note |
|---|---|---|
| 2 ft × 20 ft | Narrow maintenance routes and access strips | Easy to cut into smaller panels |
| 3 ft × 20 ft | Industrial walkways, platforms, and flooring | Common stock-panel arrangement |
| 3 ft × 24 ft | Longer platform runs and industrial flooring grids | Requires suitable lifting and transport planning |
| 4 ft × 20 ft | Wide access floors and equipment platforms | Panel weight may require lifting equipment |
| 1000 mm × 6000 mm | Common metric production-panel reference | Often cut into finished platform and cover panels |
The bearing bars must run between supports. This is the most important installation direction. A panel can be very long overall while still having a short structural span if intermediate support beams are placed beneath the bearing bars.
For example, a 3-foot × 20-foot panel may have bearing bars running along the 20-foot direction. If support beams are installed every 3 feet, the actual bearing-bar span is 3 feet, not 20 feet.
19W2 steel grating does not have one fixed load rating. Load capacity depends on bearing-bar depth, thickness, material grade, support span, load type, and deflection requirement.
The factory or engineer should confirm:
Uniform load is distributed over a broad surface area and is normally expressed in kN/m², kg/m², or pounds per square foot. It is commonly used to evaluate pedestrian flooring, general platform loading, and distributed maintenance loads.
Concentrated load is applied over a small area. Examples include a worker standing in one location, a toolbox, a machine support foot, a valve actuator, or a point where equipment rests on the panel. Concentrated loading can control the design even when the stated uniform load is relatively low.
Wheel loads from carts, pallet jacks, forklifts, or vehicles require special review. The wheel contact area, axle arrangement, wheel spacing, travel path, and support frame affect the design. A grating panel suitable for pedestrians should not be assumed suitable for wheel traffic without a verified load table or engineering calculation.
Deflection is the amount of movement under service load. A panel can remain below steel yield strength but still deflect too much for comfortable walking, drainage, vibration control, equipment operation, or panel alignment.
Deflection limits should be identified before production. A more restrictive deflection requirement may require a deeper bearing bar even when a lighter bar appears adequate based on strength alone.
19W2 grating can be supplied with plain smooth bearing bars or serrated bearing bars. The mesh pattern remains the same, but the top surface changes.
| Feature | Smooth 19W2 Grating | Serrated 19W2 Grating |
|---|---|---|
| Surface profile | Plain top edge | Notched or toothed top edge |
| Slip resistance | Suitable for dry and controlled environments | Improved traction in many wet, oily, and outdoor areas |
| Cleaning | Usually easier to sweep and wash | May hold more fine debris if cleaning is poor |
| Cost | Usually lower | Higher because serration adds processing |
| Best use | Indoor platforms, dry floors, equipment access | Outdoor walkways, stairs, ramps, wet process areas |
Serration is commonly preferred for outdoor, wet, oily, sloped, or high-slip-risk areas. Smooth grating can be a more economical option for dry indoor areas where traction conditions are controlled.
Serrated load performance should be checked using the correct serrated-grating load table. The tooth profile changes the top edge of the bearing bar, so smooth and serrated panels should not automatically be treated as having identical load ratings.
19W2 grating can be produced from carbon steel or stainless steel. Carbon steel is the most common and economical material for industrial flooring. Stainless steel is selected where corrosion resistance, hygiene, washdown conditions, chemical exposure, or marine service justify the higher initial cost.
| Material | Initial Cost Level | Typical Application |
|---|---|---|
| Bare carbon steel | Lowest | Dry indoor locations, temporary use, or later coating |
| Painted carbon steel | Moderate | Indoor industrial floors and controlled service environments |
| Hot-dip galvanized carbon steel | Moderate to high | Outdoor walkways, platforms, stairs, trench covers, humid areas |
| 304 stainless steel | Higher | Wet service, food-related facilities, general corrosion resistance |
| 316 or 316L stainless steel | Highest among common steel options | Coastal, marine, chemical, chloride-exposed environments |
Carbon steel should be specified by the required project grade when necessary. Common references may include Q235, S235, SS400, or ASTM A36 depending on the project and supply region. The final material selection should follow the applicable project standard and service environment.
Hot-dip galvanizing is commonly used for carbon steel 19W2 grating installed outdoors or in humid industrial environments. The grating is normally cut, welded, banded, and fabricated before galvanizing so that exposed edges and welded areas receive zinc coating.
| Finish Option | Main Benefit | Main Limitation |
|---|---|---|
| Bare steel | Lowest initial cost | Limited corrosion resistance |
| Painted steel | Color control and basic surface protection | May need repair at damage and cut edges |
| Hot-dip galvanized steel | Good corrosion protection for many outdoor applications | Not suitable for every aggressive chemical environment |
| 304 stainless steel finish | Good corrosion resistance and hygienic appearance | Higher material and fabrication cost |
| 316 stainless steel finish | Improved resistance in chloride and marine environments | Higher initial cost than 304 or galvanized carbon steel |
Galvanized steel is a practical choice for many outdoor industrial projects, but it is not a universal solution for strong acids, continuous chemical immersion, severe marine splash exposure, or highly aggressive chloride conditions. The environmental conditions should be reviewed before selecting the finish.
19W2 stock panels can be fabricated into installation-ready parts. Custom work increases the price because it requires additional steel, cutting, welding, inspection, handling, and surface treatment.
| Fabrication Detail | Purpose | Cost Effect |
|---|---|---|
| Edge banding | Closes open bearing-bar ends and improves edge stiffness | Adds flat bar, welding, and coating area |
| Load banding | Provides a stronger perimeter where required | Higher than standard trim banding |
| Pipe cutouts | Allows panels to fit around pipes and equipment | Requires cutting, banding, and possible reinforcement |
| Column notches | Allows grating to fit structural columns | Increases fabrication time and material waste |
| Toe plates | Helps reduce objects falling from exposed platform edges | Adds steel, welding, and coating cost |
| Frames and support angles | Creates finished trench covers and removable access panels | Adds structural steel and fitting work |
| Clips and bolt holes | Secures panels against movement, uplift, and vibration | Adds accessory, drilling, and packing cost |
| Lift handles and hinges | Supports maintenance access and removable covers | Adds individual fabrication and assembly work |
Custom fabrication should be completed before hot-dip galvanizing whenever possible. Site cutting, drilling, or welding after galvanizing can damage the protective coating and may require approved repair work.
Welded 19W2 grating is normally produced by arranging bearing bars at 1-3/16 inch centers and connecting cross bars at 2 inch centers through a controlled welding process. The finished panel may then be cut, banded, fabricated, galvanized, inspected, and packed.
| Production Stage | Main Control Point | Why It Matters |
|---|---|---|
| Raw material inspection | Steel grade, bar dimensions, straightness, surface condition | Supports consistent fabrication and structural performance |
| Bar layout | Correct 19-space bearing-bar pitch and 2-inch cross-bar pitch | Controls mesh accuracy and panel appearance |
| Welding | Secure cross-bar connections and consistent weld pattern | Prevents loose bars, rattling, and weak panel structure |
| Cutting and banding | Correct dimensions, clean edges, complete edge treatment | Ensures installation fit and safe handling |
| Fabrication | Correct cutouts, notches, holes, toe plates, and frames | Ensures panels match approved drawings |
| Surface treatment | Galvanizing coverage, paint quality, or stainless finish condition | Supports corrosion resistance and appearance |
| Final inspection | Dimensions, diagonal, flatness, welds, coating, quantity, labels | Reduces site fitting problems and shipment errors |
Inspection should be especially careful for removable covers, trench panels, stair treads, close-fitting frames, architectural flooring, and custom grating schedules with many different panel sizes.
19W2 factory price is usually calculated from finished steel weight plus manufacturing, fabrication, surface treatment, inspection, packing, and commercial costs. The closer 2-inch cross-bar spacing makes 19W2 heavier and more labor-intensive than 19W4 with the same bearing-bar section.
| 19W2 Grating Type | Indicative Factory Budget Range | Typical Scope |
|---|---|---|
| Plain black carbon steel 19W2 | About US$30–50/m² | Standard welded panels with limited fabrication |
| Hot-dip galvanized smooth 19W2 | About US$38–65/m² | Standard industrial flooring and platform panels |
| Hot-dip galvanized serrated 19W2 | About US$43–75/m² | Anti-slip panels for wet, oily, outdoor, or sloped service |
| Fabricated 19W2 galvanized panels | About US$55–115/m² or more | Cut-to-size, banded, notched, framed, identified, and export packed panels |
| Stainless steel 19W2 grating | Project-specific and usually higher | Corrosive, marine, chemical, hygienic, or food-processing environments |
These ranges are broad factory budgeting references rather than fixed offers. Actual pricing changes with bearing-bar size, steel market movement, zinc cost, finished kg/m², serration, fabrication work, quantity, packing, inspection requirements, destination, and trade term.
To receive an accurate 19W2 quote, provide:
A clear inquiry could read: “Please quote welded 19W2 steel grating with 1-1/4 inch × 3/16 inch bearing bars, serrated top surface, carbon steel, hot-dip galvanized after fabrication, finished panel size 3 feet × 6 feet, bearing bars spanning 3 feet, banded on four sides, suitable for the stated pedestrian load and deflection limit. Please provide finished weight, fabrication scope, packing method, lead time, and FOB price.”
What is the difference between 19W2 and 19W4 steel grating?
Both have bearing bars at 1-3/16 inch centers. The difference is cross-bar spacing: 19W2 uses cross bars at 2-inch centers, while 19W4 uses cross bars at 4-inch centers. 19W2 has a denser pattern, higher weight, lower open area, and usually a higher price.
Is 19W2 grating better for carts and small wheels?
19W2 can provide a denser transverse surface pattern for some cart routes, but it does not reduce the bearing-bar spacing from 1-3/16 inches. Wheel size, travel direction, load, clear opening, and flooring layout must still be reviewed. Very small wheels may require a closer bearing-bar mesh or a different flooring system.
How much does galvanized 19W2 steel grating cost?
For preliminary factory budgeting, standard hot-dip galvanized 19W2 grating may fall around US$38–65/m², while serrated galvanized 19W2 may fall around US$43–75/m². Bearing-bar size, finished weight, fabrication, quantity, packing, and delivery terms determine the final price.