... customers,is made of load flat steel bar and cross rods,placed ,horizontally and vertically,and at an equal pitch apart,by welding ... zinc thickness is more than 610g/m²(flat bar ≥5mm) and 460g/m²(flat bar ‹5mm)2:Plainting :according to the clients ... 6mm4MaterialQ235,A36,SS3045Surface treatmentBlack, hot dipped galvanising, paint6StandardChina: YB/T 4001.1-2007USA: ANSI/NAAMM(MBG531-88)UK: BS4592- ...