Steel Grating
19-W-4 Steel Grating
19-W-4 steel grating describes a common welded grating pattern with bearing bars at 1-3/16 inch (19/16 inch) centers and cross bars at 4 inch centers. Buyers still need to confirm bearing bar size, support span, load condition, finish and fabrication details before quotation.
RFQ quick details
Selection checklist
19-W-4 Steel Grating selection for project RFQs
QY Metal Tech supports international project buyers with drawing-based RFQ review, custom fabrication discussion, surface finish selection and export packing notes from Wuxi, Jiangsu, China.
19-W-4 Steel Grating specification path
| Pattern | 19-W-4 welded grating has bearing bars at 1-3/16 inch (19/16 inch) centers and cross bars at 4 inch centers. |
|---|---|
| Bearing bar size | Bar height and thickness decide load capacity together with clear support span. |
| Support span | Span, bearing direction and load condition must be confirmed before bar selection. |
| Surface | Smooth or serrated bearing bars can be reviewed by walking condition. |
| Finish | Hot-dip galvanized, painted, mill finish or stainless option depends on project environment. |
| Fabrication | Cutouts, banding, toe plates, clips and panel marks should follow drawings. |
Standards reference
Standards and finish references can be reviewed by project requirement
- Steel grating can be reviewed according to drawings and standards such as YB/T 4001.1, ANSI/NAAMM MBG 531 or BS 4592 when required.
- Hot-dip galvanizing can be specified according to ISO 1461 or ASTM A123/A123M when a defined zinc coating reference is needed.
- Platform, stair and access projects may refer to ISO 14122 or local safety requirements for walking surfaces and guardrail interfaces.
- Final specification should follow project drawings, load notes, local codes and buyer approval documents.
Specification examples
Common 19-W-4 Steel Grating model expressions
| 19-W-4 pattern | Welded bar grating with bearing bars at 1-3/16 inch (19/16 inch) centers and cross bars at 4 inch centers. |
|---|---|
| 1 x 3/16 inch bar | Common light to medium duty bearing bar expression, still checked by span. |
| 1-1/4 x 3/16 inch bar | Deeper bearing bar option reviewed for longer support span. |
| HDG 19-W-4 panel | Hot-dip galvanized 19-W-4 panels for outdoor platforms or drainage covers. |
Use these examples as RFQ shorthand, then confirm final dimensions, load, material, finish and drawings before production.
Applications
19-W-4 Steel Grating applications and project references
These references help buyers connect 19-w-4 steel grating specifications with real site conditions, fabrication details, packing requirements and installation expectations.
Platform flooring
19-W-4 grating is commonly reviewed for equipment platforms and access floors.
Drainage covers
Open welded grating panels can be reviewed for trench and drainage cover layouts.
Factory inspection
Pattern, dimensions, finish and panel marks can be checked before shipment.
Steel grating technical references
Use the load tables with their stated standard editions and design assumptions. The separate 11-W-4 specification describes a different bearing-bar spacing from 19-W-4 and is not an interchangeable load rating. Confirm the required specification and project loads with the quotation.
Technical checks before quotation
- Confirm bearing-bar center distance, cross-bar type and panel dimensions.
- Select the load-table row from clear span, support condition, load direction and deflection limit.
- Confirm material and finish, including galvanized, painted or stainless requirements.
RFQ checklist
Send 19-w-4 steel grating details for a faster quote
For faster quotation support, include dimensions, material, finish, application, quantity and destination for 19-w-4 steel grating. Drawings, sketches, replacement photos or old specifications are welcome when the product must match an existing project.
19-W-4 Steel Grating RFQ checklist
- Bearing bar size, pattern and support span
- Smooth or serrated surface and finish requirement
- Panel size, cutouts, banding and fixing clips
- Quantity, destination, drawings and packing marks
FAQ
19-W-4 Steel Grating buyer questions
What does 19-W-4 mean?
It is a welded grating pattern with bearing bars at 1-3/16 in (about 30 mm) centers and cross bars at 4 in (about 102 mm) centers. Bearing bar depth and thickness are specified separately.
How far can 19-W-4 grating span for pedestrian use?
For a 100 psf (4.8 kPa) uniform load with 1/4 in (6.4 mm) deflection (ANSI/NAAMM MBG 531 method): 1 × 3/16 in bars 4′-9″ (1450 mm), 1-1/4 × 3/16 in 5′-7″ (1710 mm), 1-1/2 × 3/16 in 6′-5″ (1960 mm) and 2 × 3/16 in 7′-11″ (2430 mm).
Is 19-W-4 the same as 11-W-4?
No. 11-W-4 has bearing bars at 11/16 in centers, a much closer spacing. The two patterns cannot be substituted for each other, so keep the exact pattern on your approved drawing.
Can a metric grating replace 19-W-4?
A metric pitch that looks close is not proof of equivalence. If you consider a metric alternative, confirm bar size, pitch, span and load with your engineer before approving it.
Can 19-W-4 grating be galvanized or serrated?
Yes. Hot-dip galvanized 19-W-4 is common for outdoor platforms and drainage areas, and serrated bearing bars can be supplied for wet or oily walking surfaces.
Can 19-W-4 panels be made to my drawings?
Yes. Panel sizes, cutouts, banding, toe plates, fixing clips and panel marks follow your project drawings.
Related paths
Continue from this product
Need a practical 19-w-4 steel grating quotation?
Send drawings, specifications, quantity, destination and packing notes. We will review the details before replying with quotation support.
Reference scope for 19-W-4
19-W-4 is not the same reference as 11-W-4
Keep the imperial pattern on the approved drawing when using this product page. The linked English three-part specification identifies itself as 11-W-4, document QY-SG-3PS-11W4-01, Rev. 1.0, 24 Jul 2026; it is a guide for comparison, not a 19-W-4 dimensional or capacity schedule.
| Reference | What must remain distinct |
|---|---|
| 19-W-4 product pattern | Bearing bars at 1-3/16 in (19/16 in) centers and cross bars at 4 in centers, with the bearing-bar depth, thickness, surface and material confirmed for the project. |
| 11-W-4 guide | The guide’s table on page 3 states 11/16 in bearing-bar centers and 4 in cross-bar centers. Its stated 3/16 in nominal bearing-bar thickness is a project-confirmation item, not an automatic requirement for a 19-W-4 order. |
| Metric load-table extract | The separately linked YB/T 4001.1-2007 extract lists metric bearing-bar families. A nearby metric pitch or nominal-width row is not evidence of imperial-pattern equivalence. |
| Load and support review | Match the actual clear span, bearing direction, supports, uniform/line/point or wheel load, loaded area and deflection limit. Keep the website’s calculated screening values separate from the historical downloadable extract. |
Before quotation, send the drawing number and revision, exact pattern, bearing-bar depth and thickness, panel size, openings and banding, support/bearing details, finish, clips and quantity. Do not substitute the 11-W-4 guide’s geometry or a metric table value into a 19-W-4 design.
Quick span guide
Maximum pedestrian span by bearing bar (19-W-4)
Longest span for a 100 psf (4.8 kPa) uniform load with 1/4 in (6.4 mm) deflection, calculated with the ANSI/NAAMM MBG 531 method.
| Bearing bar (in / mm) | mm | Max. pedestrian span |
|---|---|---|
| 3/4 × 1/8 in | 19 × 3.2 mm | 3'-6" (1050 mm) |
| 1 × 1/8 in | 25 × 3.2 mm | 4'-3" (1310 mm) |
| 1 × 3/16 in | 25 × 4.8 mm | 4'-9" (1450 mm) |
| 1-1/4 × 3/16 in | 32 × 4.8 mm | 5'-7" (1710 mm) |
| 1-1/2 × 3/16 in | 38 × 4.8 mm | 6'-5" (1960 mm) |
| 2 × 3/16 in | 51 × 4.8 mm | 8'-0" (2430 mm) |
Selection path
Specification, data and project references
1 · Check technical data
2 · See project references
3 · Datasheet and quotation
Order terms
- MOQ: 50 pcs (panels, rolls or pieces)
- Samples available; sample and freight costs paid by the buyer
- Payment: 30% deposit, 70% before shipment
- Lead time: usually 30 days ex-works after deposit and drawing approval
- Quotation in 24–48 hours on working days
- Drawings: PDF, DWG, DXF, JPG, PNG, WebP up to 12 MB
RFQ form
Request 19-W-4 Steel Grating quotation
Upload drawings if available. Include product size, material, finish, quantity, destination and application notes for a faster technical response.
Related links
Related product and RFQ resources
- Steel grating product catalogBrowse the related product family section.
- Steel grating topic entrySteel grating family page for platform grating, stair treads, drain covers, serrated grating, galvanized grating and drawing-based RFQs.
- Carbon steel bar gratingCompare material, bar spacing and project specification details.
- Steel Grating RFQ Checklist for International BuyersRFQ checklist for steel grating buyers covering application, panel or opening size, bearing bar direction, support span, finish, quantity, packing, destination and drawings.
- FRP Grating vs Galvanized Steel Grating for Wet AreasComparison guide for wet or corrosive area grating selection, covering FRP grating and galvanized steel grating by environment, traffic, support, cutouts and quotation details.
- How to Choose Steel Grating for Industrial PlatformsIndustrial platform grating selection guide covering platform use, support span, bearing direction, panel layout, finish, cutouts, fixing clips, drawings and RFQ details.
- Send project RFQ detailsSend drawings, dimensions, finish notes, quantity and destination for review.
Factory verification and order terms
Video factory visits by appointment
Video factory visits can be arranged in advance. Contact our sales team to agree a time, platform and accessible production, inspection or packing areas. Other customers’ information and confidential areas are not shown.
Lead time: usually 30 days ex-works
For regular orders, production usually takes 30 days ex-works, counted from receipt of the deposit and approval of the drawings. Larger or special orders, and stock availability, are confirmed in the written quotation. Production and transport times are stated separately in the quotation or contract.
Written quotation and delivery terms
Trade terms are agreed for each order and logistics arrangement. The written quotation specifies the applicable Incoterms® 2020 rule, named delivery place or port of shipment, and whether freight, insurance and taxes are included. For containers handed to a carrier before vessel loading, FCA is considered rather than automatically using FOB.
Quality concerns and corrective action
Please provide the order number, affected quantity, photos or video, and relevant measurements or inspection records when reporting a quality concern. If responsibility is confirmed to lie with us, a remedy such as repair, additional supply, replacement, refund or price adjustment is agreed under the contract. Costs and the action plan are confirmed in writing; no unconditional return or fixed resolution period is promised.
