... .fine finish 4.ideal percentage elongation 5.good mechanical property seamless schedule 40 pipe1)Suitable for conveyance of gas, petroleum, liquid ... ,519,556,587 etc.DIN2391,DIN2394, DIN17175, EN10210, EN10305 etc.API,GBF:Delivery status:BK,NBK,GBK,BKW,BKS more and ... services.For all details, please never hesitate to contact us. seamless schedule 40 pipe