We are Yanshan Yonghui Steel Pipe Co., Ltd based in Changzhou , China. We are member of Tradekey.com since March, 2010. Our business is related to Minerals & Metallurgy industry and we specifically deal in steel pipe. Please find our product details below: steel pipes Specification: ASTM A106, A53, and API 5L GR. B Size: 1/4 to 28 inches Outer diameter: 13.7 to 711.2mm Wall thickness: 1 to 80mm Schedule: SCH40, STD, SCH80, XS, SCH160, and XXS Length: 5.8m steel pipe The hot-rolled tubes and the API seamless toughened steel tubes are wholesale, the welded lines of which are invisible. The hydraulic test value is 5MPA-30MPA (30 to 50 times by ordinary welded tubes). The company has gained the deed of appropriation of the API5I member symbol of American Oil Acad. and passed the ISO9002 quality system attestation of Norwegian Ships Classification Organization. steel pipes Specification: ASTM A106, A53, and API 5L GR. B Size: 1/4 to 28 inches Outer diameter: 13.7 to 711.2mm Wall thickness: 1 to 80mm Schedule: SCH40, STD, SCH80, XS, SCH160, and XXS Length: 5.8m steel pipe The hot-rolled tubes and the API seamless toughened steel tubes are wholesale, the welded lines of which are invisible. The hydraulic test value is 5MPA-30MPA (30 to 50 times by ordinary welded tubes). The company has gained the deed of appropriation of the API5I member symbol of American Oil Acad. and passed the ISO9002 quality system attestation of Norwegian Ships Classification Organization. Thank you for taking the time to go through our business profile. If there are any question, inquiry or comments, please feel free to contact us.