Standard: ASTM A53, ASTM A106, ASTM A500-98, ASTM A501-98, ASTM A519-98, JIS G3441-1994, JIS G3444-1994, BS EN 10210-1, EN10219.
Application: Used in the general structure and the mechanism, including construction, machinery, transportation, aviation, petroleum mining and each kind of structural tubes.
Size: OD: 114mm-914mm;WT: 4mm-60mm;LENGTH: 5.8/6/11.8/12m.