Tushen bututu yana buɗewa a kan iyakar biyu kuma yana da sashin rami, tsayin da kewaye da babban ƙarfe, bisa ga hanyoyin samarwa za a iya raba bututun ƙarfe mara nauyi da bututun ƙarfe welded, ƙayyadaddun bututun ƙarfe tare da girma duka (kamar diamita ko tsayi) da kaurin bango, ya ce girman girmansa yana da faɗi sosai, daga ƙananan diamita na capillary har zuwa mita da yawa a diamita, babban bututu mai diamita.

Ana iya amfani da bututun ƙarfe don bututu, kayan aikin zafi, masana'antar injuna, binciken yanayin ƙasa, kwantena, masana'antar sinadarai da dalilai na musamman.

(1) High quality carbon tsarin karfe karfe 20G, 20MnG, 25MnG.

(2) Alloy tsarin karfe 15MoG, 20MoG, 12CrMoG, 15CrMoG, 12Cr2MoG, 12CrMoVG, 12Cr3MoVSiTiB, da dai sauransu.

Boiler tube ya kasu kashi biyu:GB/T3087-2018tsakiyar da low matsa lamba tukunyar jirgi tube,GB/T5310-2018babban matsa lamba tukunyar jirgi tube.Manyan samfuranmu sun haɗa da:

ASTMA210 (A10M) - 2012Matsakaici carbon karfe tukunyar jirgi da superheater sumul karfe bututu, babban abu ne SA210 GrA1, SA210GrC;

ASME SA106/SA-106M-2015, manyan kayan sune GR.B gr.C;

ASME/SA SA - 213-213 - m, gama gari abu: T11, T12, T22 da T23, T91, P92, T5, T5b, T9, T21, T22, T17;

ASTM A335 / A335M-2018, Babban kayan sune: P11, P12, P22, P5, P9, P23, P91, P92, P2, da dai sauransu.