... cover, trench cover, compound gratings, storage shelves, ladder, fences and handrail so on for construction project, oil project, seaport, power plant ... Style Steel Grating, Serrated Style Steel Grating and I Bar Type Steel Grating. They are widely used in steel structure platforms ... Bar (Load Bar) Specifications (mm):The specification of plain type and serrated type bearing bar is 20 x 3 to 100 x ...