... :30,40,60mm 2>Cross bar pitch;50,100mm 3>Plain,Serrated,I-shape 4>galvanized welded steel grating Features: High strength and light structure ... power plant, the chemical plant, the refinery, the iron and steel plant, the paper mill, the machine factory, the cement plant ... . NoItemDescription1Bearing bar25x3,25x4,30x3,30x4,30x5,32x5,40x5,50x5,.....75x10mm2Bear bar pitch12.5, 15, 20, 23.85, 25, 30, 30.16 ...