Changfeng Group possesses the first class production and inspection equipment, digital control hydrostatic testing machine, online ultrasonic flaw detector, and X-ray detector, heat treatment, metallographic and flow detector etc, all reach the domestic advanced level. Supply ERW Pipe, Used FOR oil, gas, water and other liquid transportation, construction, steel pile and other project which use pipe Dia range: 219-406mm, (8"~16") . Thickness:5~14MM, ( 0.19"~0.55") Length: up to 12M MATERIAL: Q235, Q345; GR.B, X42~X70;ST52.3, ASTM A53 , ASTM A106, AND OTHER SPECIAL REQUIREMENTS STANDARD: GB/T , API , ASTM If you have any question, please contact: Mr Bing Ma Tel: +86 317 3099667 Mob: +86 13903173298 Web: ***** Add: 6, Bei Hai Road, Economic and Technology Development Zone, Cangzhou, Hebei Province, China. 061000