Our company is located in the national pipe production base, Yanshan industrial park, Cangzhou City, We are professional in production and export seamless steel tubes, longitudinally welded pipes, spiral welded pipes according to the American standard, Germany standard, Japanese standard, we have API 5L , ISO-9001, the British Lloyd' s certification qualifications, We also sales rectangular pipe, steel pipe, stainless steel pipes, all kinds of pipe fittings executive standard: API 5L GR.B ASTM A106/ A53 GR.B ST52 etc., the production Specifications: Seamless Pipes ( 1 / 2 " -32" XSCH10-XXS) Seamless steel tube OD: 18mm-813mm( 3/ 8â -32â ) WT: 2mm-80mm( SCH10-XXS) Material ASME API 5L GR.B/ X42/ X46/ X52/ X56/ X65/ X70 API 5CT K55/ J55/ N80/ L80/ P110 ASTM A106 GR.B / C ASTM A53 GR.B A333 GR.1-GR6 A335 P11/ P22/ P5/ P91/ P9/ P12 ASTM A213 T5/ T11/ T22/ T12T/ T9/ T91 ASTM A519 1020/ 4130 A210-A/ C A192 A179-C DIN DIN17175 ST35.8 / ST37 / ST45-8 DIN1626 ST42/ ST37-2/ ST52-3 DIN1629 ST52/ ST35/ ST45/ / ST52-4/ ST55 JIS STKR490 GB GB/ T8162/ 8163 10# / 20# / 35# / 45# / Q345B( 16MN) GB/ T3087/ 5310 20G/ 12Cr1MoV/ 15CrMoG GB/ T9948 12CrMo/ 1Cr5Mo/ 1Cr19Ni11Nb