mild steel grating floor grating 1. ISO9001 2. Type: Plain,Serrated,I-bar mild steel ... /16'', 1 1/4''x3/16'', 1 1/2''x3/16'', 1''x1/4'', 1 1/4''x1 ... 1 1/4''x1/8'', 1 1/2''x1/8'' etc2Bearing Bar Pitch12.5, 15, 20, 23.85, 25, 30, 30. ... standard: 19-w-4, 15-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 ...