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WS-G
WS steel bar grating
Welded bar grating – the WS code, five standard meshes, materials, finishes and tolerances.
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Flagship product · WS steel grating
Steel grating, engineered to carry
WS welded bar grating from 20 × 3 to 150 × 8 mm in 30, 40 and 60 mm meshes – selected from published load and span tables, forge-welded, cut and banded to your layout, hot-dip galvanised and shipped with clips, treads and covers ready to install.
- 20×3 – 150×8
- Bearing bar sizes, mm
- 30 · 40 · 60
- Bar pitch, mm cross bars 50 / 100 mm
- 2.5 – 7.5 kPa
- Published span tables heavy duty beyond
- T-2 – T-25
- Trench & pit cover classes
One of World Steel's core products
Grating is in almost every structure we build – platforms, walkways, stairs, mezzanines, trenches and drainage pits. That is why World Steel makes it as a product line of its own: a clear WS code system, standard meshes and panels, load tables for every size and a production line that forge-welds, cuts, bands and marks each panel to the layout.
You get the right bar for the load instead of a guess, panels that drop into place without site cutting, and one supplier for the grating, the platform steel, stair treads, handrails and covers – galvanised, packed by area and documented for export.
WS grating range
The complete grating catalogue
Every product has its own page with codes, tables, standards and ordering data.
U · C · D
WS grating load and span tables
Safe loads, deflections, weights and recommended spans for bars at 30, 40 and 60 mm.
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WS-G455 – G1508
WS heavy-duty steel grating
Deep bars and 8 × 8 mm cross bars for 5–7.5 kPa floors, forklifts and vehicles.
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-S-
WS serrated steel grating (S)
Notched bars for wet, oily and outdoor floors – with load and deflection factors.
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SUS304 · SUS316
WS stainless steel grating (SUS304 / SUS316)
Pickled and passivated stainless grating for food, chemical and marine areas.
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T1 – T6
WS grating stair treads (T1–T6)
Welded or bolted treads with no nosing, checker-plate or abrasive anti-slip nosing.
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WS-GT · WS-GU
WS trench covers – GT and GU
Trench covers for 100–600 mm trenches in classes pedestrian, T-2 to T-25.
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WS-GM
WS drainage pit covers – GM
Pit covers with bedframes, 300 × 400 to 700 × 700 mm, T-2 to T-25.
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M · L clips
WS grating clips and fasteners
Saddle clips, hold-downs and M8 bolts – minimum four sets per panel.
Chi tiết & bảng tra →Where WS grating goes
Floors, stairs, trenches and pits
One grating line, four families of use – each with its own tables and details.
2.5 – 5 kPa
Platforms & walkways
Plant platforms, catwalks, mezzanines and roof walkways – panels cut around every column and pipe, with toe plates and clips.
T1 – T6
Stairs & landings
Treads with banded or holed end plates and checker or abrasive nosing, matched to the stair stringers and landings.
T-2 – T-25
Trenches & pits
GT, GU and GM covers with seat frames and bedframes, trial-fitted and supplied as sets.
panel by panel
Cut, banded & packed
Every panel marked to the layout, galvanised and palletised by area for container shipping.
Ứng dụng
Industries that walk on WS grating
01
Power & energy
Boiler houses, turbine halls, cable trenches and coal or biomass handling.
02
Oil, gas & chemicals
Pipe-rack walkways, tank platforms, serrated and stainless floors.
03
Water & wastewater
Channel covers, filter galleries and stainless walkways over basins.
04
Mining, cement & ports
Conveyor walkways, transfer towers, heavy-duty floors and drainage.
05
Food & beverage
Hygienic stainless platforms, wash-down areas and tank access.
06
Factories, logistics & civil
Mezzanines, machine platforms, roads, car parks and drainage pits.
Tiêu chuẩn & tuân thủ
Grating codes by market
WS grating is designed and fabricated to the code named in the project specification. Key references:
United States
- ANSI/NAAMM MBG 531Metal bar grating manual
- ANSI/NAAMM MBG 532Heavy-duty metal bar grating
- OSHA 1910 Subpart DWalking-working surfaces
- ASTM A123Hot-dip galvanizing
- Live loads
- ASCE 7 Table 4.3-1 – e.g. 125 psf light manufacturing
Australia / NZ
- AS 1657Fixed platforms, walkways, stairways and ladders
- AS/NZS 1170.1Imposed actions
- AS 3996Access covers and grates – classes A to G
- AS/NZS 4680Hot-dip galvanizing
- AS/NZS 5131 WSC được chứng nhậnFabrication – World Steel certified CC3
Europe
- DIN 24537-1 · RAL-GZ 638Steel gratings and their quality
- EN ISO 14122-2 / -3Working platforms, walkways, stairs
- EN 124Gully tops and manhole tops – A15 to F900
- EN ISO 1461Hot-dip galvanizing
- EN 1090-2 WSC được chứng nhậnExecution – World Steel EXC3 · CE marking
Asia & Middle East
- Owner specificationOften NAAMM, AS or DIN practice with local loads
- JIS G 3101 SS400Common carbon steel grade for grating
- TCVN 2737 / TCVN 5575Vietnam – loads and steel structures
- SBC 301 / SBC 306Saudi Arabia – loads and steel structures
Nội dung chỉ mang tính tham khảo – chỉ dẫn kỹ thuật của dự án, phiên bản quy chuẩn được áp dụng và cơ quan có thẩm quyền là căn cứ quyết định.
Kỹ thuật
A code that says everything
WS-G325/30/100-S-G tells the whole story: 32 × 5 mm bearing bars at 30 mm, cross bars at 100 mm, serrated, hot-dip galvanised. Engineers, buyers and site teams read the same code on drawings, quotations, pallets and panel tags.
Choose plain (M) or serrated (S) bars, galvanised (G), paint coated (PP) or untreated (U), in SS400, A36, Q345 or stainless SUS304 / SUS316 – see the WS bar grating page.
Kỹ thuật
Selected from tables, not guesswork
Every WS size has published safe uniform and concentrated loads, deflections and recommended spans for 2.5, 3, 4, 5 and 7.5 kPa. We select the lightest bar that carries your load over your span – and check wheel loads, serrated bars and deflection limits on top.
The full tables are on the load and span tables page; try the quick selector below for a first answer.
Kỹ thuật
Made on our grating line
Flat bars and twisted cross rods are forge-welded under heat and pressure at every intersection, straightened, cut to the shop drawing and banded around ends and openings. Each panel is checked for width, squareness, bar lean and bow, then marked.
Panels are hot-dip galvanised and palletised by area, so each platform is installed from one bundle – the same quality system that covers our structural steel, certified to ISO 3834-2.
Kỹ thuật
Installed in hours, not days
Saddle clips – top plate, hold-down and M8 bolt – fix panels to the steel without damaging the zinc; at least four sets per panel. Welding is used where a floor will never be lifted: a fillet at the first bearing bar of every corner, 20 mm long and 3 mm high.
Panels leave about 10 mm gaps, bearing bars always span between supports, and every clip set is packed with its panels – see clips and fasteners.
Kỹ thuật
Covers for every trench and pit
WS-GT covers sit in cast-in angle seat frames, WS-GU covers on the edges of precast U-channels and WS-GM covers in pit bedframes. Classes run from pedestrian through T-2, T-6 and T-14 to T-20 and T-25 – defined by rear wheel loads from 8 to 100 kN.
Covers can be bolted down or hinged against theft; frames and covers are trial-fitted and supplied as sets – see trench covers and pit covers.
Quick selector
Find the lightest grating for your span
Choose the design load and the clear span between supports – the selector lists the WS gratings that reach it, lightest first, from the WS recommended-span tables.
Bảng đầy đủ
| Bars at 30 mm (WS 30/…) | Bars at 40 mm (WS 40/…) | Bars at 60 mm (WS 60/50) | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mã | 2.5 | 3.0 | 4.0 | 5.0 | 7.5 | 2.5 | 3.0 | 4.0 | 5.0 | 7.5 | 2.5 | 3.0 | 4.0 | 5.0 | 7.5 | |
| WS-G203 | 20 × 3 mm | 1190 | 1060 | 1060 | – | – | 1110 | 980 | 980 | – | – | 1000 | 890 | 890 | – | – |
| WS-G253 | 25 × 3 mm | 1410 | 1350 | 1250 | – | – | 1310 | 1250 | 1170 | – | – | 1180 | 1130 | 1050 | – | – |
| WS-G323 | 32 × 3 mm | 1700 | 1620 | 1510 | – | – | 1580 | 1510 | 1400 | – | – | 1430 | 1350 | 1270 | – | – |
| WS-G205 | 20 × 5 mm | 1350 | 1290 | 1200 | – | – | 1260 | 1200 | 1120 | – | – | 1140 | 1090 | 1010 | – | – |
| WS-G403 | 40 × 3 mm | 2010 | 1920 | 1780 | – | – | 1870 | 1780 | 1660 | – | – | 1690 | 1610 | 1500 | – | – |
| WS-G255 | 25 × 5 mm | 1600 | 1530 | 1420 | 1350 | 1220 | 1490 | 1420 | 1320 | 1250 | 1130 | 1350 | 1290 | 1200 | 1130 | 1020 |
| WS-G325 | 32 × 5 mm | 1930 | 1840 | 1710 | 1620 | 1460 | 1790 | 1710 | 1590 | 1510 | 1360 | 1620 | 1550 | 1440 | 1360 | 1230 |
| WS-G405 | 40 × 5 mm | 2280 | 2180 | 2030 | 1920 | 1730 | 2120 | 2030 | 1890 | 1780 | 1610 | 1920 | 1830 | 1700 | 1610 | 1460 |
| WS-G455 | 45 × 5 mm | – | – | – | 2090 | 1890 | – | – | – | 1950 | 1760 | – | – | – | 1760 | 1590 |
| WS-G505 | 50 × 5 mm | – | – | – | 2270 | 2050 | – | – | – | 2110 | 1910 | – | – | – | 1910 | 1720 |
| WS-G555 | 55 × 5 mm | – | – | – | 2440 | 2200 | – | – | – | 2270 | 2050 | – | – | – | 2050 | 1850 |
| WS-G655 | 65 × 5 mm | – | – | – | 2760 | 2490 | – | – | – | 2570 | 2320 | – | – | – | 2320 | 2100 |
| WS-G755 | 75 × 5 mm | – | – | – | 3080 | 2780 | – | – | – | 2860 | 2590 | – | – | – | 2590 | 2340 |
| WS-G756 | 75 × 6 mm | – | – | – | 3220 | 2910 | – | – | – | 3000 | 2710 | – | – | – | 2710 | 2440 |
Indicative: carbon steel, single simply-supported panel, plain bars, uniform load. Wheel loads, serrated bars and deflection limits are checked by our engineers before production.
Thông số
Specification & options
- Bearing bars
- 20×3 to 75×6 mm standard; heavy duty 70×6 to 150×8 mm
- Mesh
- WS 30/100 · 30/50 · 40/100 · 40/50 · 60/50 – standard panels 5800 × 970–1003 mm
- Material
- SS400 · ASTM A36 · Q345 · SUS304 / SUS316
- Bar type
- M plain · S serrated
- Finish
- G hot-dip galvanised · PP paint coated · U untreated · duplex
- Fabrication
- Cut to layout, banded ends and openings, toe plates, kick plates, hinged panels, panel marks
- Related items
- Stair treads T1–T6, GT / GU / GM covers, checkered plate, clips and fasteners
Quy trình
From layout to installed floor
- 1
Layout & loads
Your drawings or IFC model, loads and code.
- 2
Selection
WS code per area from the load and span tables.
- 3
Panel drawings
Panels, openings, banding and marks for approval.
- 4
Production
Forge-welded, cut, banded and inspected panel by panel.
- 5
Galvanising & QC
Hot-dip galvanised, coating thickness recorded.
- 6
Packed by area
Palletised with clips, marked and shipped.
AS/NZS 5131 CC3
EN 1090 EXC3 · CEFAQ
Câu hỏi thường gặp
What does a WS grating code like WS-G325/30/100-S-G mean?
Bearing bars 32 mm high × 5 mm thick at 30 mm centres, cross bars at 100 mm, serrated (S) bars and hot-dip galvanised (G) finish. M means plain bars, PP paint coated and U untreated.
Which grating do I need for a walkway?
Pedestrian walkways are usually designed for 3 kPa (4 kPa for crowded public areas). With bars at 30 mm, WS-G253 spans about 1350 mm and WS-G325 about 1840 mm at 3 kPa – the project designer confirms the load and deflection limit.
Do you supply standard panels or cut panels?
Both. Standard panels are 5800 mm long and 970–1003 mm wide; most projects order panels cut to the layout, banded around openings and marked to match the drawing.
Is your grating hot-dip galvanised?
Hot-dip galvanising after fabrication is our standard finish, with the coating thickness recorded per batch. Paint coated, duplex, untreated and stainless steel grating are also available.
Can you make trench and pit covers to EN 124 or AS 3996?
Our GT, GU and GM covers are made in WS classes T-2 to T-25 defined by wheel load. Where a project specifies EN 124, AS 3996 or AASHTO, covers are designed to that standard and, where conformity by test is required, made to a tested design or load-tested as specified.
What do you need for a quotation?
The layout or IFC model with supports and openings, the design load or WS code, mesh and finish, the fixing type and the destination. For covers, the trench or pit sizes and the load class.
Điều kiện giao hàng · Incoterms® 2020
Giao hàng theo điều kiện quý khách cần
World Steel báo giá tại nhà máy, FOB hoặc giao đến cảng, công trình của quý khách. Đóng gói xuất khẩu, chứng từ và vận chuyển từ TP. Hồ Chí Minh là một phần dịch vụ.
So sánh 11 điều kiện Incoterms® 2020 →
Philippines
Need grating for your project?
Send the layout and loads – we return the WS selection, panel drawings and a delivered price, with treads, covers and clips in one package.