Babban calibre walda karfe bututu yana nufin karfe bututu tare da walda seam, kasa kayan aiki ne mafi girma karfe farantin da karfe band, babban calibre kai tsaye walda karfe bututu ne karfe farantin amfani, da irin karfe bututu samar da inganci mafi girma, low farashi ne daya daga cikin mafi karfe bututu kayayyakin da ake amfani da a halin yanzu.

Welding karfe bututun yana nufin karfe bututun da aka yi da karfe band ko karfe farantin karfe bending deformed zuwa zagaye, murabba'i da sauransu siffofin bayan welded zuwa, surface da seams. Welding karfe bututun samar da tsari ne mai sauki, high samar da inganci, iri-iri bayanai da yawa, kayan aiki da ƙananan kudi, amma gaba ɗaya ƙarfin ƙasa da seamless karfe bututun. Tun daga 1930s, tare da saurin ci gaban ingancin karfe strap ci gaba da sarrafawa da kuma ci gaban walda da kuma dubawa fasaha, walda seam inganci ci gaba da inganta, da kuma karfe bututun walda iri-iri bayanai da ke ƙaruwa, kuma a cikin ƙarin yankuna

Daban-daban bisa walda hanyar za a iya raba a cikin arc walda bututu, high mita ko low mita juriya walda bututu, gas walda bututu, tandu walda bututu, Bondi bututu, da dai sauransu. Ta hanyar walda suture siffar za a iya raba a kai tsaye suture walda bututun da kuma madaidaiciya walda bututun.

General walda bututun da ake amfani da su jigilar da low matsin lamba ruwa. An yi da Q195A, Q215A, Q235A karfe. Hakanan ana iya yin shi da sauran karfe masu laushi masu sauƙin walda. Karfe bututu don yin ruwa matsa lamba, karkata, flattening da sauran gwaji, akwai wasu bukatun ga farfajiyar inganci, yawanci isar tsawon ne 4-10m, yawanci bukatar daidaitaccen m (ko double m) isar. Bayani na waldi bututun da aka nuna da nominal girma (mm ko inci) nominal girma da ainihin daban-daban, waldi bututun da aka tsara bango kauri ne na yau da kullun karfe bututun da thickened karfe bututun biyu, karfe bututun da aka raba da threaded da kuma ba tare da threaded biyu bisa ga bututun karshen nau'i.

Babban calibre walda karfe bututu yau da kullun amfani da shi ne biyu gefe binne arc walda walda tsari, bisa ga daban-daban na walda seams za a iya raba zuwa babban calibre kai tsaye seam karfe bututu da kuma babban calibre madaidaiciya karfe bututu, inda kai tsaye seam karfe bututu bisa ga daban-daban halitta hanyar za a iya raba zuwa UOE, RBE, JCOE karfe bututu da dai saurans Babban diamita madaidaiciya karfe bututun samar da tsari ne mai sauki, samar da inganci mai girma, low farashi, yayin da ƙarfin babban diamita madaidaiciya karfe bututun ne yawanci mafi girma fiye da madaidaiciya karfe bututun, za a iya samar da babban karfe bututun da diamita mai ƙwanƙwasa blanks, kuma za a iya samar da daban-daban karfe bututun da diamita mai fadi blanks. Amma samar da inganci ne low idan aka kwatanta da seam karfe bututun. Babban caliber karfe bututu yafi amfani da manyan bututun injiniya, ruwa da gas injiniya, birni bututun cibiyar sadarwa gini, birni injiniya, ruwa samar da drainage injiniya, manyan gini karfe gine-gine.