Name: Rectangular hollow sections
Standard: ASTM A500, JIS G3466, EN10219, DIN2240, BS1387, AS1163.
Main steel tube grade: A.B.C, Q195, Q215, Q235, Q355
Specification: 20*30*1.2mm to 400*600*40mm
TIANJIN YUANTAI DERUN PIPE MANUFACTURING GROUP CO., LTD
