Yantai Wanjie Steel Grating Co., Ltd.

untreated standard steel grating panel, black steel grating,mild steel grid

untreated standard steel grating panel, black steel grating,mild steel grid
Product Detailed

1.ISO9001:2008 quality systems
2.4 running lines.
3. Delivery:7-30days



W-- welded steel grating   L-- pressure-locked   C-- socket-welding

Bearing bar centers

15-30, 40, 60, 80, 90 mm etc. with 30, 40 mm recommended.

Cross bar centers

any greater than 30mm is ok. with 50, 100mm recommended. 

Surface treatment

G-hot-dip galvanization(G is usually omitted)


U- untreated

Bearing bar shape

F- plain surface (F is usually can be omitted)

S-serrated surface

I-the section is of ‘I’ type


2. calculation formula of nominal width:

nominal width=bearing bar centers×numbers of centers+thickness of bearing centers


3.We recommend that you choose nominal width as your choice for the convenient processing and attractive appearance of steel grating panels. It’s better to keep the the length in accordance with the width.


4. Description:

Bearing bar centers at 20mm: 

This kind of fine mesh steel gratings have strong load ability and also can prevent the access of sundries of 18mm in diameter. This kind of gratings fit for pedestrian deck, walkway and ditch covers which require high security.

Notes: common welding standard: single-side full welding every 6 bearing bars.


Bearing bar centers at 30mm: 

This kind of steel grating is the most commonly used in projects with American, Australian, Japan standards are available. This kind of gratings are featured well by heavy-duty, well resistance of strong impact on surface. Gratings with cross bar centers at 50mm can bear lateral impact well. This kind of steel grating fit for all kind of industrial platforms.

Notes: common welding standard: single-side full welding every 5 bearing bars.


Bearing bar centers at 40mm: 

light grating and very economical. This kind of gratings fit for fixed platforms, walkway, and stair treads and British, German,French and Japanese standards are available. The products most commonly used for Belt corridor, storage shelf,Attic panel, trestle, guardrail, sunshade gate, etc. 

Notes: common welding standard: single-side full welding every 4 bearing bars.


Bearing bar centers at 60mm: 

 This kind of steel gratings are especially used for mining industries. It can solve the problem that mineral splashing down and stacks on the walkway. This product usually used for mineral miningand processing and it is the best choice for workshop, meeting room and suspended ceiling of stadium in terms of it's light weight.

Notes: common welding standard: single-side full welding every 3 bearing bars.


Wanjie brand welded steel grating panels are manufactured by high-power pressure resistance welder controlled by computers. Steel grating panels are formed by the longitudinal and latitudinal arrangement of flat steel and cross bar at the given spacing with strong welding spot and Rectangular hole on surface.


In terms of flat bar surface, Wanjie steel grating panels can be flat, serrated and I-type. We have more than 300 specifications according to the flat steel specification, bearing bar centers and cross bar centers. Different surface treatments can be chosen under different service conditions.

Wanjie steel grating panels are semi-finished products with nominal width and 5-7m in length. Under the process of cutting, edge wrapping and surface treatment, the panels can be made into platforms, ditch covers and stair treads.


Wanjie grating panels have been largely exported and well received due to even surface, strong and beautiful welding spot,accurate size.

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