Astm A403 WPS31254 Sch10s Asme B16.9 Lap Joint Stub ya ƙare
Astm A453 Deed ya ba da cikakken bayani game da aji A, B, C, da D, Class 660. Rarraba kayan A453 tare da yawan kuɗi guda biyu, viz. 85 ksi da 100 ksi [585 da 725 MPa na 725 MPA A286 ingantaccen hazo ne hardening ausenitic bakin karfe wanda aka tsara don yanayin zafi har zuwa 1300¡Ãac (704¡Ãac) inda karfin gwiwa mai ƙarfi ana buƙatar juriya da lahani mai kyau da kuma kyakkyawan cenp.
A amma ba a tsara Weld bututun da aka tsara don weled a cikin yankin ba a ƙarshen (s) tare da ba da damar canji a cikin shugabanci ko kuma yana ba da damar canji. Bakin karfe Tube Helbow sannan ya zama wani sashi na jigilar ruwa (mai, gas, tururi, sunadarai, ...) a cikin aminci da ƙarfi ko kuma mafi kyau ko kuma nesa ko kuma nesa ko mai nisa.