Bututun ƙarfe mai walda, wanda kuma aka sani da bututun welded, bututun ƙarfe ne da aka yi da farantin ƙarfe ko tsiri mai ƙarfe bayan crimping da walda, gabaɗaya mita 6.Welded karfe bututu samar tsari ne mai sauki, high samar yadda ya dace, iri-iri bayani dalla-dalla, kasa kayan aiki zuba jari, amma general ƙarfi ne m fiye da m karfe bututu.
Small diamita welded bututu rungumi dabi'ar madaidaiciyar kabu waldi, babban diamita welded bututu rungumi dabi'ar karkace waldi.Dangane da siffar ƙarshen bututun ƙarfe, an raba shi zuwa bututu mai walƙiya madauwari da nau'i na musamman (square, rectangular, da dai sauransu) bututu mai walda;Dangane da kayan aiki da amfani daban-daban, an raba shi zuwa bututun ƙarfe na walda don jigilar ruwa, galvanized welded na bututu don jigilar ruwa mai ƙarancin ƙarfi, da bututun ƙarfe na lantarki don jigilar bel.Dangane da ƙayyadaddun ƙayyadaddun da tebur mai girma a cikin daidaitattun ƙasa na yanzu, ana jerawa diamita na waje * kauri daga ƙanana zuwa babba.