... :Stainless steel,Hot-dipped Galvanzied Use:platform,ladders,floor drain,floor drain ISO9001 Steel Grating For Floor Drain Material:steel grating is made of ... -w-4, 19-w-2, 15-w-2 etc. 3Twisted Cross Bar Pitch38.1, 40,50, 60, 76, 80, 100, 101 ... :steel grating is mainly used for industrial platform, ladders, helps column, channel pedal, railway, high CeDao floor drain cap, platform scale, covers ...