... Use:platform,ladders,floor drain,floor drain ISO9001 Stainless Steel Grating Material:steel grating is made of ... low carbon steel plate,stainless steel plate,flat steel plate,etc Technique:steel ... hot dipped Galvanzied Specification:steel gratingBearing bar specification:20x3 to 100x6Bearing bar pitch:12.5,15,25,30 ... ,40,60 mm etcCross bar picth:38,50,76,100 mmChina standard: ...