A671 thiab A672 yog EFW (Electric-Fusion Welded) Carbon Steel Pipes siv rau kev siv cua sov thiab qis qis (A671) thiab kev pabcuam siab ntawm qhov kub nruab nrab (A672). Raws li tau hais los saum toj no, A671 yog siv rau hauv huab cua thiab qis dua daim ntawv thov thiab A672 yog siv rau cov ntawv thov kev pabcuam siab ntawm qhov kub nruab nrab. Txawm li cas los xij, yog tias peb sib piv cov ntsiab lus xws li A672 Gr.C60 & A671 Gr. CC60; cov khoom siv raw phaj siv yog tib yam rau ob lub kav dej & cov khoom siv tshuab kawg yog tib yam. Kev kho cua sov yog tib yam. Qhov sib txawv ntawm 2 qib tsuas yog nyob rau hauv cov kev cai xeem. A672 yuav tsum tau weld qauv kos los ntawm 500ft ntev ntawm cov yeeb nkab thiab tso cai rau koj los ua ob npaug ntawm cov qauv hauv cov ntaub ntawv, cov qauv qub tsis ua haujlwm. A671 yuav tsum tau weld qauv kos los ntawm 200ft ntev ntawm cov yeeb nkab uas tsis muaj kev cai rau qhov tsis lees paub qhov vuam.
ASTM A671 txuj
ASTM A671 qhia cov qauv kev cai rau electrofusion welded steel yeeb nkab ntawm atmospheric thiab cryogenic kub. Cov qauv no feem ntau yog siv rau cov kav dej ua haujlwm ntawm qhov qis qis thiab qhov kub thiab txias qhov twg cov khoom siv lub zog thiab kev tiv thaiv corrosion tsis zoo li ASTM A672. ASTM A671 npog qib ntawm CC10 txog CC80, feem ntau yog siv cov pa roj carbon steel thiab cov hlau tsis tshua muaj hlau.
Qhov txawv ntawm ASTM A672 thiab ASTM A671
Daim ntawv thov: ASTM A672 feem ntau yog siv rau cov ntawv thov kev kub ntxhov ntawm qhov nruab nrab thiab siab dua, thaum ASTM A671 yog siv rau cov ntawv thov cua sov thiab qis dua.
Cov ntaub ntawv: ASTM A672 npog ntau yam khoom siv, suav nrog carbon steel, qis alloy steel, thiab stainless hlau, thaum ASTM A671 feem ntau npog cov hlau thiab cov hlau tsis tshua muaj hlau.
Lub zog yuav tsum tau muaj: ASTM A672 muaj lub zog ntau dua vim nws siv hauv kev kub siab thiab kub siab.
