1.ISO9001:2008 quality systems
2.4 running lines.
"Wanjie" brand trench cover is made by weld-press steel gratings, widely used in urban road, public squares, gardens, wharf, airport, parking, highway, railway, industrial engineering and so on.
As to ditches without edge, U-type Trench covers are very easy and economical.
attractive appearance : clear and smooth figure, silvery appearance, modern-styled.
Optimal drainage: Leaking area can reach 83.3%, which is as twice as cast iron.
Galvanized surface: rust-proof, anti-corrosion,Maintenance convenient.
theftproof design: the cover and the frame are connected with hinges, so it's convenient for opening- up and very safe.
Economical: much more cheaper than cast iron.
heavy-duty and large loading-bearing capacity, can be used in wharf,airport etc.
a variety of specifications can meet all demands of shapes, sizes, spans, load capability in different conditions.
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.
G-hot-dip galvanization(G is usually omitted)
Bearing bar shape
F- plain surface (F is usually can be omitted)
I-the section is of ‘I’ type
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.