Product description Steel Grating made by welding with flat steel and cross/round bars with certain distances. Our Galvanized Steel Grating enjoy the feature of high strength, light structure, high bearing, convenience for loading and other properties. The hot dipped zinc coating gives the product excellent anti-corrosion. 1)Raw material :Low carbon steel, stainless steel, aluminum alloy 2)Types of Steel Grating:Plain/smooth type, I type ,Serrated/teeth type. 3)Open-end type and closed-end type Heavy-duty welded steel grating is manufactured by fusing bearing bars and cross bars together at high temperatures to form a permanent joint. This type of grating utilizes deeper and thicker bearing bars to provide greater durability, strength and rigidity than light-duty grating options. Available material types include economical carbon steel and corrosion-resistant stainless steel. Designed to carry heavy rolling loads and maintain the same level of performance over many years of use, heavy-duty welded steel grating is ideal for a variety of applications. Common uses include airfield landing mats, highway bridge decking, ventilation grills, curb inlet grates, ramps, docks, sidewalks, concrete reinforcements, vault covers, industrial flooring, trenches, marine platforms and paper mills. Specification Specification of Steel Grating Remarks: Special Material, High Zinc Coating and New Style can be Customized. Material Standard ASTM A36, A1011, A569, Q235, S275JR, Stainless steel 304/316, Mild steel & Low carbon steel, etc Bearing Bar (Width x Thickness) 25x3, 25x4, 25x4.5, 25x5, 30x3, 30x4, 30x4.5, 30x5, 32x5, 40x5, 50x5, 65x5, 75x6, 75x10…..100 x10mm etc; I bar: 25x5x3, 30x5x3, 32x5x3, 40x5x3 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 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 etc. US standard: 19-w-4, 15-w-4, 11-w-4, 19-w-2, 15-w-2 etc. Twisted Cross Bar Pitch 38.1, 50, 60, 76, 80, 100, 101.6, 120mm, 2'' & 4'' etc Surface Treatment Untreated(black), Hot-dipped galvanized, Powder coated, Electroplate, Painting or as per customers' requirement. Grating Style Plain / Smooth, Serrated / Teeth, I bar, Serrated I bar Packing (1) Bandage and Paperboard: Generally applies to neat steel plate; (2) Screw Locking Method: Use 4 screw rods through the aperture of the steel grid, for high strength; (3) Steel Pallet: Traditional export packing. Payment Terms T/T, L/C, Western Union