... stee grating b.JA355/40/100 c.Cross bar as flat bar d.ISO 9001:2000 supplier e.Best ... different shape,different standard,and any special requirements with different bearing capacity and span.In this case, ... 4, 19-w-2, 15-w-2 etc.3Twisted Cross Bar Pitch38.1, 50, 60, 76, 80, 100, ... , spray coating6Grating StylePlain / Smooth, Serrated /teeth, I bar, serrated I bar7StandardChina: YB/T 4001.1-2007, USA ...