API ERW LINE PIPE O.D. 4"-16" W.T. 4mm-18MM LENGTH :5.8-18M API ERW LINE PIPE Size 114.3--457.2mm Wall thickness 4--16mm Length 5.8-18m Standard API 5L, API 5CT, EN10217, EN10219, GB/B9711.1, GB/T9711.2, SY/T5037-2000, GB/T3091-2008 Material Q235, Q345B, API 5L GR.B /X42-X80 and other special material Usage the transmission of petroleum and natural gas, building construction, water conveying, ...