... power plants, water, sewage treatment plants, public works, sanitation projects such as the platform, walkway, bridge, building groove, covers, ... /60/50G505/60/50G555/60/50G605/60/501, The platform steel grating plate application scope is extremely widespread, such ... install handle and gemel in the steel grating plate which moves frequently.5, Platform steel grating plate serging welding standard: ...