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Contact SupplierI type steel grating used I type flat bar(flat on both sides of thick thin middle) and twist bar (5*5,6*6,8*8 also called twisted steel, square steel, twisted steel) cross arrangement, and welded. With square lattice in the middle of the I type gratings mainly used to do ditch cover, Steel structure platform plate, steel ladder’s stair treads etc.
Steel Grating Size: 1m×6m standard type (special size and American standard size are also customizable)
Material: Low carbon steel (Q235)=A36
Surface Treatment: Hot dip galvanizing, paint or no coating
Surface Shape: Plain, Serrated and I type
Steel Grating Standard: China YBT4001-2007
America ANSINAAMM (MBG531-88)
Britain BS4592-1987
Australia AS1657-1992
Steel Standard: China GB700-88 ASTM (A36) BS4306 (43A)
Hot Dip Galvanizing Standard: China GBT13912-92 ASTM (A123) BS729
Technological Process
(1) Material
(2) Pressure Welding
(3) Cutting
(4) Welding of Ends Bar
(5) Hot Dipped Galvani-zation
(6) Final Shipment