The ASTM A671 CB65 LSAW steel pipeline chemical composition is contained with C,Mn,P,S.ASTM A671 CB65 LSAW steel pipeline is applied for flares stacks hydrocracking, FEED for heaters, process piping applications, power plant piping,refineries, LNG terminals,storage for natural gas,heat exchangers, high pressure applications,welded pressuress vessels foe storage of cryogens and so on.