jzcl

building metallic material:: 1.bearing bar pitch:30-60mm 2.cross bar pitch:50-100mm 3.surface processing:galvanized building metallic material: steel grating is made of serrated bearing bar and cross rods.they placed horizontally and vertically, and at an equal pitch apart,by welding with 200 tonHydraulic resistance automatic welding equipment then cutting punching and handing ends.Center to ...