Karkace welded bututusamar da amfani da zafi birgima nada.Abubuwan da ke cikin gawa na nada galibi suna ƙasa da nau'ikan nau'ikan farantin karfe iri ɗaya, yana haɓaka haɓakar bututun mai karkace.Saboda mirgina shugabanci na karkace welded bututu nada ba perpendicular zuwa bututu axis shugabanci, da crack juriya na karkace welded bututu kayan.

Saboda aikin bututun karkace na musamman, lokacin da fashewar bututun mai waldadi ta faru, weld ɗin ya sami damuwa kuma haɗin gwiwar yana da ƙanƙanta, busa baki gabaɗaya ba shine asalin walƙiyar karkace ba, don haka mafi girman tsaro.Karkace walda kusa da lahani tare da layi daya da karfi karkace walda ne karami, don haka hadarin fadada ba.

Bututun ƙarfe yana fuskantar matsin lamba na ciki, yawanci a cikin bango akan manyan aikace-aikacen ƙarfi guda biyu, damuwa na radial δY da damuwa axial δX.Weld sakamakon damuwa δ = δY (l/4sin2α + cos2α) 1/2, wanda, α shine kusurwar helix na bututun walda.The helix kwana na karkace walda bututu ne kullum 50-75 digiri, don haka karkace weld babban sakamakon danniya.A cikin wannan aikin a ƙarƙashin matsin lamba ɗaya diamita karkace welded bututu bango kauri za a iya rage da yawa, karkace bututu shuka za a iya sanya a cikin wani karamin caliber.