... pipeline transportation system of petroleum and natural gas industries api 5l b erw steel pipe Product nameERW carbon steel pipe (HFW ... , SCH40S, STD, SCH40, SCH60, SCH80S, XS, SCH80 etc.Length1m-24mStandardAPI 5L, API 5CT, ASTM A53, ASTM A252, ASTM A500, ASTM A795 ... hollow sections- general structure purpose and pressure service etc. api 5l b erw steel pipe