1. Janar manufa sumul karfe bututu ana birgima daga talakawa carbon tsarin karfe, low gami tsarin karfe ko gami tsarin karfe bisa ga kayan. Misali, bututu maras kyau da aka yi da ƙananan ƙarfe kamar na 10 da na 20, galibi ana amfani da su azaman bututun sufuri don tururi, iskar gas, iskar gas, iskar gas, albarkatun mai iri-iri da sauran iskar gas ko ruwa iri-iri; matsakaicin ƙarfe na carbon kamar 45 da 40Cr Bututun da aka ƙera ana amfani da su musamman don kera sassa daban-daban na inji da kayan aikin bututu.

2. Ana ba da bututun ƙarfe mara ƙarfi don dalilai na gabaɗaya bisa ga tsarin sinadarai da kaddarorin inji, kuma bisa ga gwajin hydraulic. Bututun ƙarfe mara nauyi waɗanda ke ɗauke da matsa lamba dole ne su wuce gwajin matsi na ruwa.

3. Ana amfani da bututu marasa ƙarfi na musamman a cikin tukunyar jirgi, binciken ƙasa, bearings, juriya na acid, da sauransu.API 5CTJ55, K55, N80, L80, P110, Etc, fasa bututu da tukunyar jirgi don masana'antar petrochemical.

Tsarin bututun ƙarfe maras sumulana amfani da su ne don tsarin gabaɗaya da tsarin injiniya. Abubuwan wakilcinsa (maki): carbon karfe No. 20, No. 45 karfe; Alloy karfe Q345, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo, da dai sauransu.

An fi amfani da bututun ƙarfe marasa ƙarfi don jigilar ruwa don jigilar bututun ruwa a cikin injiniya da manyan kayan aiki. Abubuwan wakilci (maki) sune 20, Q345, da sauransu.

Bututun ƙarfe mara nauyi don ƙananan matsa lamba da matsakaicitukunyar jirgiana amfani da su ne musamman don bututun da ke jigilar ruwa mai ƙanƙanta da matsakaici a cikin tukunyar jirgi na masana'antu da na gida. Abubuwan wakilci sune 10 da 20 karfe.

Sumul karfe bututu donhigh-matsi boilersAna amfani da su ne don matsanancin zafin jiki da matsa lamba na jigilar ruwa da bututu a cikin tashar wutar lantarki da tukunyar wutar lantarki. Abubuwan wakilci sune 20G, 12Cr1MoVG, 15CrMoG, da sauransu.

Sumul karfe bututu donhigh-matsi takiAna amfani da kayan aiki galibi don jigilar bututun mai zafi da matsanancin matsin lamba akan kayan aikin taki. Abubuwan wakilci sune 20, 16Mn,12CrMo, 12Cr2Mo, da dai sauransu.

An fi amfani da bututun ƙarfe marasa ƙarfi don fasa man fetur a cikin tukunyar jirgi, masu musayar zafi da bututun jigilar ruwa a cikin tsire-tsire masu narkewar mai. Abubuwan wakilcin sa sune 15mog, 15CrMoG, 12CRmog, da sauransu.

An fi amfani da bututun ƙarfe marasa ƙarfi don silinda gas don yin iskar gas daban-daban da silinda na ruwa. Abubuwan wakilcinsa sune 37Mn, 34Mn2V, 35CrMo, da sauransu.

Ana amfani da bututun ƙarfe maras zafi mai zafi don kayan kwalliyar ruwa, waɗanda galibi ana amfani da su don yin goyan bayan ruwa, silinda da ginshiƙai a cikin ma'adinan kwal, da sauran nau'ikan silinda da ginshiƙai. Abubuwan wakilcinsa sune 20, 45, 27SiMn, da sauransu.

Cold-ja ko sanyi-birgima daidaici sumul karfe bututu aka yafi amfani ga inji Tsarin da carbon latsa kayan aiki, bukatar high girma daidaito da kuma mai kyau surface gama. Abubuwan wakilcinsa sun haɗa da 20, 45 karfe, da dai sauransu.

Ana amfani da bututun ƙarfe maras sumul sanyi da bututun ƙarfe na musamman don yin sassa da sassa daban-daban. An yi su da ƙaƙƙarfan ƙarfe na tsarin carbon da ƙananan ƙarfe na tsarin ƙarfe.

Madaidaicin diamita na ciki maras sumul bututu na na'ura mai aiki da karfin ruwa da pneumatic cylinders ana amfani da yafi amfani da sanyi-ja ko sanyi birgima sumul karfe bututu tare da daidai diamita na ciki na na'ura mai aiki da karfin ruwa da kuma pneumatic cylinders. Its wakilci kayan ne 20, 45 karfe, da dai sauransu.