... 5CT-0834 and precision is verTaizhou Shaungyang Precision Seamless Steel Tube Co.,LtdIndustrial park,Jiulong Town,Hailing ... .alibaba.com http:www.syjmg.comProduct16Mn Carbon structural steel pipeMaterialGB 16Mn(Q345,st52)StandardASTM,DIN,GBDelivery conditionBK ... ,NBK, BKW,BKS TechniqueCold rolled or Cold drawnSpec DescriptionOD: Φ12-114mm, Thickness:s1-6mmApplicationStructure, ...