... )WT: 0.8mm-12mm 3)Length: 3-12m 4)Standard: ASTM, BS, EN, JIS, DIN, API, AS 5)Certificate:CE, UL ... customers since our good quality and service. 2. Production standard: ASTM A53, BS1387, EN10255, EN10240, EN10220, EN10219, EN39, JIS3. Section type ... ,Q215,Q235,Q275, Q345 SIZEOUTER DIAMETER:21.3mm-219.1mmWALL THICKNESS:0.8mm-12mmMax Length:12mSTANDARDASTM,BS1387-1985,GB/T3091-200 ...