Welded Steel Grating — Types, Specs & Applications
Product overview, selection inputs and evidence to confirm in a written quotation.
Sizes and options below are enquiry examples. Ask the quotation to confirm product designation, material, dimensions, load and deflection evidence, finish or resin, standards and editions, inspection documents, manufacturing party, packing and schedule.
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Welded Steel Grating — The Industry Standard for Heavy Loads
Of all the steel grating types specified on industrial projects, welded bar grating is by far the most common. Its one-piece welded construction handles pedestrian and vehicular loads, drains liquids and debris through its open grid, and tolerates decades of outdoor exposure when hot-dip galvanized — which is why EPC contractors and procurement engineers default to it for platforms, walkways, and trench covers.
Minimum order, production timing, packing, trade terms and destination logistics are confirmed only after the quantity, configuration, process scope and delivery requirements have been reviewed.
What is Welded Steel Grating?
Welded steel grating consists of two elements: bearing bars — the parallel flat bars that carry the load — and cross bars, typically twisted square rods set perpendicular to them. In production, the cross bars are forge-welded into the bearing bars by electric resistance welding: high current and hydraulic pressure fuse the two at every intersection, with no filler metal, rivets, or mechanical locks.
The result is a homogeneous panel in which every joint is a fused connection. Unlike press-locked or riveted grating, there are no separate fasteners to loosen under vibration, which is why welded construction dominates heavy-duty industrial service.
Welded Steel Grating Specifications
Named standards are purchaser specification inputs, not a claim that every configuration is certified. State the required standard and edition, acceptance criteria, inspection points and documents; the quotation must confirm the applicable scope.
Common Applications for Welded Grating
Welded grating is the default flooring and drainage product across heavy industry: industrial platforms and mezzanines in petrochemical, power, and mining plants; walkways and catwalks on pipe racks, tank farms, and conveyor lines; stair treads with checkered-plate nosing; and trench and drainage covers in plants, ports, and municipal works.
Advantages of Welded Construction
Provide clear span, support arrangement, load cases, wheel or point-load footprint, deflection limit and service conditions. Request configuration-specific data or calculations and have safety-critical selections approved by the responsible qualified person.
| Bearing bar size | 20×3 mm to 100×9 mm (height × thickness) |
| Bearing bar pitch | 19-space (≈30 mm), 15-space (≈24 mm); metric 30/40 mm series |
| Cross bar pitch | 50 mm or 100 mm (2 in. / 4 in.), twisted square or plain round |
| Material | Carbon steel Q235/A36; stainless steel 304/316 |
| Surface treatment | Hot-dip galvanized (ASTM A123), untreated, painted, stainless |
| Panel size | Typically up to 1,000 × 6,000 mm; cut and banded to order |
| Bar type | Plain or serrated bearing bars |
| Standards | Reference, edition, conformity scope and documents to be confirmed in the quotation |
- Bearing bars 20×3 mm to 100×9 mm, made to project spec
- Resistance-welded joints — no rivets, no loose connections
- Required standards, editions, inspections and documents confirmed per quotation
- Hot-dip galvanized, untreated, painted, or stainless 304/316
- Required standards, editions, inspections and documents confirmed per quotation
- Cut-outs, banding, and toe plates per your CAD drawings
Frequently Asked Questions
Can welded steel grating be fabricated to our project drawings?
GoGrating accepts enquiries for this product family. The written quotation must identify the legal supplier, manufacturing party and location, available construction and materials, fabrication scope, inspection documents, packing and delivery terms. Website examples are not order commitments. Submit drawings with the enquiry so scope can be reviewed before quotation.
What is the minimum order quantity for welded grating?
Minimum order, production timing, packing, trade terms and destination logistics are confirmed only after the quantity, configuration, process scope and delivery requirements have been reviewed.
What is the typical production lead time?
Minimum order, production timing, packing, trade terms and destination logistics are confirmed only after the quantity, configuration, process scope and delivery requirements have been reviewed.
Which standards does GoGrating welded grating comply with?
Named standards are purchaser specification inputs, not a claim that every configuration is certified. State the required standard and edition, acceptance criteria, inspection points and documents; the quotation must confirm the applicable scope.
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