 Itinye nọkwa okpomọkụ bụ isi akụkụ nke ígwè anwụrụ itinye nọkwa annealing ngwá, nke ikpo anwụrụ onuete welded na emenyu ka oké egwu okpomọkụ, nke a nwere ike belata ịgbado ọkụ nchegbu ma nwere mgbape, na-emepụta nso mkpụrụ Ọdịdị pụrụ-ekwe nkwa na-amị tenacious ígwè anwụrụ nzukọ nile ọkọlọtọ nkọwa. 