we are manufacture of carbon seamless steel tube acc. to ASTM API5L A106GR.B A53B A179 A192 DIN17175 DIN1629 DIN2391 JISG3445 EN10216 EN10255 A333GR6 etc. The factory have API CERTIFICATE ISO & PED CERTIFICATE and located in SUZHOU,JIANGSU which is closed to SHANGHAI PORT.Welcome for your visiting and inquiry!
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