... 1>Bearing bar pitch:30,40,60mm 2>Cross bar pitch;50,100mm 3>Plain,Serrated,I-shape 4>galvanized tree steel grid ... Features: High strength and light structure The reliable grid welding enables high ... the chemical plant, the refinery, the iron and steel plant, the paper mill, the machine factory, ... 1"x3/16", 1 1/4"x3/16", 1 1/2"x3/16", 1"x 1/4", 1 1/4"x 1/4", 1 1/2"x 1/ ...