... ,Hot-dipped Galvanzied Use:platform,ladders,floor drain,floor drain ISO9001 Steel Grating For Floor Drain Material:steel grating is made ... steel plate,etc Technique:steel grating is made by pressing and welding,surface treatment should be untreated,painted or ... platform, ladders, helps column, channel pedal, railway, high CeDao floor drain cap, platform scale, covers the grille, stereo, road parking ...