We are a professional Chinese supplier for the following steel tubes & pipes, Please kindly check if you are interested in that. 1) stainless steel industrial seamless pipes: A213, A269, A312, DIN17175, etc 2) stainless steel welded & decorate pipes: A213, A249, A269, A312, A554, etc 3) carbon steel seamless pipes: A53, A106, A179, A192, API5L, DIN2391, etc 4) carbon steel welded pipes: A53, API 5L (ERW, SSAW, LSAW ) 5) sanitary stainless seamless & welded tubes: A270, 3A, ISO, DIN, IDF, SMS, JIS, etc â—† Carbon steel seamless pipe: Standards: A53、A106、API 5L、A179、A192、A209、A210、A519、DIN2391、DIN17175、DIN1629、DIN1630、DIN2440、DIN2448、BS EN10216-2、BS EN 10240、BS EN10305-1、BS3059、GB8162、GB8163、GB5310、GB3087、JIS3461 Material: A、B、C、X42、X52、X60、A-1、A179、A192、T1、STKM11A、STKM12A、STB340、20G、320、360、440、St 37.0、St44.0、St52.0、St35、St45、St 52、St35.8、St45.8、10#、20#、35#、45# â—† Carbon steel Welded pipe: Standards: ASTM A53、API 5L â—† Stainless steel seamless pipe: Standards:ASTM A312 / A312 M 、ASTM A213/A213M、ASTM A269、ASTM A270、ASTM A370、ASTM A450、ANSI/ASME B36.19 M、NACE MR 0175、ASTM A262、GB/T14975、GB/T14976、GB/T13296 Material：304(0Cr18Ni9) 、304L(00Cr19Ni10)、304/304L、316( 0Cr17Ni12Mo2 )、316L(00 Cr17Ni14Mo2) 、316316L 、321( 0Cr18Ni9Ti)、317L (00Cr19Ni13Mo3)、347(0Cr18Ni11Nb)、310S(0Cr25Ni20) For futher information, please don&＃039;t hesitate to contact with me or check our website: ***** Kind regards and goes well.