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 enjoy the features of high strength, high strength, light structure, high bearing, convenience for loading and other properties.
Variety:plain/flat steel grating,serrated steel grating.
|1||Bearing Bar||25x3, 25x4, 25x4.5, 25x5, 30x3, 30x4, 30x4.5, 30x5, 32x5, 40x5, 50x5, 65x5, 75x6, 75x10,100x10mm etc;US standard: 1'x3/16', 1 1/4'x3/16', 1 1/2'x3/16',1'x1/4', 1 1/4'x1/4', 1 1/2'x1/4', 1'x1/8', 1 1/4'x1/8', 1 1/2'x1/8' etc.|
|2||Bearing Bar Pitch||12.5, 15, 20, 23.85, 25, 30, 30.16, 30.3, 32.5, 34.3, 35, 38.1, 40, 41.25, 60, 80mm etcUS standard: 19-w-4, 15-w-4, 11-w-4, 19-w-2, 15-w-2 etc.|
|3||Twisted Cross Bar Pitch||38.1, 50, 60, 76, 80, 100, 101.6, 120mm, 2' & 4' etc|
|4||Material Grade||ASTM A36, A1011, A569, Q235, S275JR, SS304, Mild steel & Low carbon steel, etc|
|5||Surface Treatment||Black, self colour|
|6||Grating Style||Plain / Smooth surface,serrated surface.|
|7||Standard||China: YB/T 4001.1-2007, USA: ANSI/NAAMM(MBG531-88),UK: BS4592-1987, Australia: AS1657-1985, Japan:JIS|
|8||Application||-Rotation ways, channels, and platforms for pump rooms and engine rooms in various ships;-Flooring in various bridges such as railway bridge sidewalks, over-bridges across the street;-Platforms for oil extraction sites, car washing sites and air towers;-Fencings for car-parks, buildings and roads; drainage trench covers and drainage pit covers for high strength.|