Nekuvandudzwa kwesainzi yemazuva ano uye tekinoroji, indasitiri yesimbi se "skeleton" yeindasitiri yepasirese, chinzvimbo chayo chiri kuwedzera kukosha, uye zvinodiwa zvemhando yesimbi zvakanyanya kuomarara, inova imwe yenzira dzinoshanda dzekuvandudza mhando yesimbi carburization desulfurization, isina musono calcium Seamless Solid Calcium Cored Wire umo inoita basa rakakosha.