Girman OD: 1 \ / 2 "" ~ 48 "
Asme B36.19m ita ce madaidaiciyar ƙira don bututun ƙarfe na bakin ciki, wanda ke haifar da girma, haƙuri, da abubuwan sarrafawa don duka welded da balessan bututu.
Allo allos sune farkon zabi don mai kashe bututun. A nan, saman yanayin an gama rarraba ?? Kuma abun cikin oxygen a cikin ƙananan ɓangaren an rage. An kuma taɓa amfani da tagulla - wani lokacin ana amfani da shi a cikin maimaitawar farfadowa na ƙarshe, wanda ke aiki tare da cikakken caji. A lokaci guda, waɗannan allos daban-daban suma suna da wasu ƙarin ƙari na baƙin ƙarfe da manganese, waɗanda suke wajaba don kyawawan halaye masu kyau a cikin mahalli masu rauni. Baya ga kasancewa da lahani na ruwa mai tsayayya da ruwan teku, jan ƙarfe-nickel aloys ma ya tabbata sosai.