... : slotting, splice, welding, and finishing operationType:Plain Style Steel Grating, Serrated Style Steel Grating, I Bar Type Steel GratingSpecifications::1) Bearing Bar (Load Bar) Specifications ... , 55 x 7 x 4, 60 x 7 x 4, 65 x 7 x 4, 70 x 7 x 4, 75 ... with best impact resistance, it find most widely use as platform, aisle, drain cover, and stair thread in power plant, refinery ...