Black steel grating is made by welding with flat steel of serrated steel and bars with certain distance. And the surface of the steel grating is untreated. It goes through cutting , edging and other processes.The products enioy the features of high strength , high strength , light structure , high bearing , convenience for loading and other properties.
Black Steel Grating has short life and low cost. It is popular with customers at present.
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 YB/T4001-2007
America ANSI/NAAMM (MBG531-88)
Britain BS4592-1987
Australia AS1657-1992
Steel Standard: China GB700-88 / ASTM (A36) / BS4306 (43A)
Hot dip galvanized steel grating: China GB/T13912-92 / 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
