... welding every 5 bearing bars.Bearing bar centers at 40mm: light grating and very economical. This kind of gratings fit for ... products most commonly used for Belt corridor, storage shelf,Attic panel, trestle, guardrail, sunshade gate, etc. Notes: common welding standard: single ... and suspended ceiling of stadium in terms of it's light weight.Notes: common welding standard: single-side full welding ...