Q235 galvanized welded steel pipe: (1)Standard:AISI,ASTM,JIS,GB,BS (2)Grade:Q235 (3)Technique:cold rolled (4)Type:steel pipe Quick Details ... Standard: AISI,ASTM,BS, JIS, GBGrade:Q235Thickness: 3 - 45 mmSection Shape: RoundPlace of Origin: Tianjin China ... Non-alloyStandard: ASME, ANSI, ASTMGrade: 10#, 20#, 45#, Q345, API K55, API L80, A...Outer Diameter: 21-800mm Packaging ...