... ) Thinkness: 1.0--20mm2) OD: 15*15mm---600*600mm3) Standard: ASTM GB DIN BS4) L: 4-14mO.D. :15 * 15mm - 600 ... of origin:Tianjin, ChinaStandard :DIN EN 10210, DIN EN 10219, ASTM A500, GB/T3094-2000, GB/T6728-2002, GB/T178-2005 ... :Q195, Q215, Q235, Q345, Fe310, Fe360, St33, St37-2, ASTM 1010, ASTM 1017, ASTM 1020Surface:Painted, oiled,galvanized square steel pipe Stainless square steel ...