... Galvanized 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:12.5,15,25,30,40,60 ... (4)durable in use Application:steel grating is mainly used for industrial platform, ladders, helps column, channel pedal, railway, high ...