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