... -12mm 3)Length: 3-12m 4)Standard: ASTM, BS, EN, JIS, DIN, API, AS 5)Certificate:CE, UL, FM, ... ASTM A53, BS1387, EN10255, EN10240, EN10220, EN10219, EN393. Section type: round, square, rectangular, oval and other special section type4. Detailed Product DescriptionERW steel ... 219mm WT:0.8mm-8.5mm Length:12m PRODUCTBlack STEEL PIPE/painted/powder coatedTECHNIQUEWELDED/ERWMATERIALQ195,Q215,Q235,Q275, Q345 ...