Ọ na-eji uncoiling nnukwu eriri igwe drum efere, na slitting n'ime umpty ibe ka chọrọ obosara, mgbe ahụ ka recoiling na mbukota n'ime dum bale nke ụgbọelu efere ọzọ usoro nke oyi-ekwe, punching, ọjà welder, wdg
