... Use:platform,ladders,floor drain,floor drain ISO9001 Steel Bar Grating Material:steel grating is made of low carbon ... painted or hot dipped Galvanzied Specification:steel gratingBearing bar specification:20x3 to 100x6Bearing bar pitch:12.5,15,25,30,40, ... , railway, high CeDao floor drain cap, platform scale, covers the grille, stereo, road parking lot, organs, schools, factories and enterprises, ...