... 8'', 1 1/4''x1/8'', 1 1/2''x1/8'' etc2Bearing Bar Pitch12.5, 15, 20, 23.85, 25, ... -w-4, 11-w-4, 19-w-2, 15-w-2 etc.3Twisted Cross Bar Pitch38.1, 50, 60, 76, 80, ... 100, 101.6, 120mm, 2'' & 4'' etc4Material GradeASTM A36, ... painted, spray coating6Grating StylePlain / Smooth, Serrated /teeth, I bar, serrated I bar7StandardChina: YB/T 4001.1-2007, USA: ...