Bakin Karfe Karfe Elbow
A cikin tsarin bututun, gwiwar hannu shine bututu mai dacewa wanda ke canza alkiblar bututun. Bisa ga kusurwa, akwai uku da aka fi amfani da su: 45° da 90°180°. Bugu da ƙari, bisa ga buƙatun injiniya, yana kuma haɗa da sauran maƙarƙashiyar kusurwa kamar 60°.
Kayan gwiwar gwiwar an jefa baƙin ƙarfe, bakin ƙarfe, ƙarfe mai ƙarfe, ƙarfe na ƙarfe na ƙarfe, ƙarfe na ƙarfe, ƙarfe mara ƙarfe, da robobi. Hanyoyin haɗi tare da bututu sune: walƙiya kai tsaye (hanyar da aka fi sani da) haɗin flange, haɗin narke mai zafi, haɗin haɗin lantarki, haɗin haɗin igiya da haɗin haɗin gwiwa, da dai sauransu. Hatimin gwiwar hannu, zafafan matsi mai zafi, ƙwanƙwaran turawa, ƙwanƙwasa simintin hannu, ƙirƙira gwiwar hannu, gwiwar hannu clip, da sauransu. Sauran sunaye: 90° gwiwar hannu, lanƙwasa kusurwar dama, soyayya da sauransu. lankwasa, farar karfe gwiwar gwiwar hannu, da sauransu.
Ƙarfin ƙarfi da alamun ƙarfi sune mafi kyau a cikin kowane nau'in ƙarfe. Babban fa'idarsa shine juriya na lalata. Dole ne a yi amfani da bakin karfe a lokuta masu lalata sosai kamar yin takarda sinadarai. Tabbas, farashin kuma ya fi girma!
