... wall of well. ASTM A106. for the purpose of the pipeline project of boiler,water&petroleum. ASTM A53 It is used ... A192 For manufacture wall panel,economizer,reheater,superheater and steam pipeline of boilers. Standard API 5CT API 5L ASTM A106 GR ... . End Plain end, beveled end, Cut square , Grooved , Threaded and coupling, etc. Certification ISO , API, Mill Test CertificateMain marketUSA, Canada, Turkey ...