... GBBS standard5. Main Material:(Carbon Steel & Low Alloy steel)ASTM A53, A106, A210, A252, A333 etc; X42, X46, X52, X60, X65, X70 ... two ends as per customer’s requirements8. Surface treatment:Bare pipe, Painted, Oiled, Galvanized, 3PE,FBE,Epoxy Coating 9. Usage:Widely ... .12. Chemical composition:Please See below. Process of Seamless Steel Pipe Lonrise Group with total assets of 0.3 billion have ...