Steel Frame Lattice: Material:galvanized sheet,stainless steel sheet, Bearing bar pitch:30,40,60mm Cross bar pitch:50,100mm Steel Frame Lattice: Material:galvanized sheet ... ,stainless steel sheet, Bearing bar pitch:30,40,60mm ... )UK:BS4592-1987 D)Australia:AS1657-1985 E)Japan:JJS Steel Frame Lattice