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Hello�We are the Steel pipe and fittings manufacture .Our products mainly including,Seamless pipe, ERW Pipe ,LSAW Pipe,SPIRAL Pipe ,Flange�Elbow, etc. We also establish an effective complete quality control system. In 2003, our company obtained the certificate of ISO9001 Quality System Authentification, and it started to run in accordance with API 5L and API 5CT in 2004.Material standard: ASTM A106 Gr.B, A53Gr.B, ST52 ST45 API 5L GR.B, API 5L X42 X52 X65, J55 K55 N80, A335 P5 P9 P12 P11 P22, ASTMA213 T22 T11, 10CrMo910 etc.We look forward to working with youBest wishesE-mail: *******@*****.com:*******@*****.com Phone�+86-*******5527 Fax: 86-0317-*******http:/www.qianchengsteel.comWang Haicheng