Bututun ƙarfe maras sumul yawanci suna buƙatar fenti da beveled kafin barin masana'anta.Waɗannan matakan sarrafawa sune don haɓaka aikin bututun ƙarfe da daidaitawa da buƙatun injiniya daban-daban.

Babban makasudin yin zanen shi ne don hana bututun ƙarfe yin tsatsa da lalata lokacin ajiya da sufuri.Zane zai iya samar da fim mai kariya a saman bututun ƙarfe, ware iska da danshi, da kuma tsawaita rayuwar sabis na bututun ƙarfe.Yin zane yana da mahimmanci musamman ga bututun ƙarfe waɗanda ke buƙatar adana na dogon lokaci ko amfani da su a cikin yanayi mai ɗanɗano.

Maganin bevel shine sauƙaƙe walda na bututun ƙarfe.Bututun ƙarfe mara nauyi yawanci suna buƙatar waldawa idan an haɗa su.Bevel na iya ƙara yankin waldawa da tabbatar da ƙarfi da hatimin walda.Musamman a cikin tsarin bututun da ake amfani da shi a cikin matsanancin matsin lamba da yanayin zafi mai zafi, maganin bevel na iya inganta ingancin walda da kuma hana yayewa da fashewa.

Domin ƙayyadaddun ƙa'idodi na bututun ƙarfe mara nauyi, kamarASTM A106, ASME A53kumaAPI 5L, ana buƙatar magunguna masu zuwa yayin sarrafawa:

Yanke: Yanke cikin tsayin da ake buƙata bisa ga buƙatun abokin ciniki.
Zane: Aiwatar da fenti mai hana tsatsa zuwa saman bututun ƙarfe.
Bevel: Ana yin maganin bevel kamar yadda ake buƙata, yawanci ya haɗa da bevels masu siffar V guda ɗaya da nau'ikan V biyu.
Mik'ewa: Tabbatar da madaidaiciyar bututun ƙarfe don sauƙin shigarwa da amfani.
Gwajin Hydrostatic: Yi gwajin hydrostatic akan bututun ƙarfe don tabbatar da cewa zai iya tsayayya da ƙayyadadden matsa lamba kuma ya dace da ka'idodin aminci.
Gane aibi: Yi amfani da hanyoyin gwaji marasa lalacewa kamar duban dan tayi da X-ray don duba lahani na ciki na bututun karfe don tabbatar da ingancinsa.
Alama: Alama ƙayyadaddun samfur, ƙa'idodi, bayanan masana'anta, da sauransu akan saman bututun ƙarfe don sauƙin ganowa da gudanarwa.
Wadannan matakan sarrafawa suna tabbatar da aminci da amincin bututun ƙarfe marasa ƙarfi a cikin aikace-aikace daban-daban kuma sun cika ka'idodin bututun ƙarfe a fannonin masana'antu daban-daban.