... high techonology&rich experience quick shipmnet ISO9001 catwalk bar grating(stairs bar grating) Packaging Detail:seaworthy,by pallet or ... Style Steel Grating, Serrated Style Steel Grating and I Bar Type Steel GratingApplication: flooring walkway, platform and steel structures ... single-side full welding every 6 bearing bars. Bearing bar centers at 30mm: Standard: American, Australian, Japan standards ...