20# carbon steel pipe 1.Standard:ASTM,AISI,EN,DIN,BS 2.O. ... delivery.superior quality About the Products: Descriptioncarbon steel pipe,seamless steel pipe,steel pipe StandardGB5310-95,GB8087-1999,GB8162,GB8163-1999,GB3087,GB6479 ... 50mmLength6m,5.8m,3m,or be requiredCertificateISO,CE,APITechniqueHot rolled,cold rolledSurfacePolished,black,bright ApplicationPetroleum and Oil,Chemical Industry, Energy ...