... -2008 ,API 5CT Taizhou Shaungyang Precision Seamless Steel Tube Co.,LtdIndustrial park,Jiulong Town,Hailing District ... alibaba.com http:www.syjmg.comIteamGB/T3087 seamless steel pipeTechinqueCold drawnStandardASTM,DIN,GBMarterial10#,20#,45#,16Mn,Q345 ... , NBK ,BKW GBKApplicationStructure,transport gas and oil, making machine part,extCertificationISO9001-2008,API Spec 5CTPackingBundles or seaworthy ,or ...