1.ISO9001:2008 quality systems
2.4 running lines.
1. The type of steel grating is indicated by a letter as follows:
W-- welded steel grating L-- pressure-locked C-- socket-welding
2. Pitch of bearing bars ranges from 15-30, 40, 60, 80, 90 mm etc. with 30, 40 mm recommended.
3. Pitch of cross bars, any greater than 30mm is ok. with 50, 100mm recommended.
4. Sign of the shape of baring bar:
F- plain surface (F is usually can be omitted)
I-the section is of ‘I’ type
5. Surface treatment:
G-hot-dip galvanization(G is usually omitted)
Bearing bar centers at 20mm:
Itemized type 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.
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.
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.
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.