ƙwararrun zamewa

Akwai nau'ikan nunin faifai guda uku, nunin faifai masu ɗaukar ball, nunin faifai na ƙasa, da akwatin. Shigar da gida na layin dogo na Lianli galibi zanen ƙwallon karfe ne. Zamewar ƙwallon karfe shine ainihin zamewar ƙarfe mai kashi biyu ko uku. An raba kayan zuwa karfe mai sanyi da 304 bakin karfe. Shigarwa yana da sauqi qwarai. Kuna buƙatar kawai dunƙule ƴan sukurori don kiyaye manyan dogo da ƙananan dogo a cikin majalisar. Wuraren zamewar suna da wadata a faranti, kuma ciki an yi shi da ƙwallan ƙarfe masu ƙarfi. Hakanan zamewar yana da santsi bayan shigarwa. Hakanan za'a iya kwantar da layin dogo na zamewar a sake daurawa. Sakamakon haka, a cikin kayan daki na zamani, nunin faifan ƙarfe na ƙarfe a hankali yana maye gurbin nunin faifai na roller kuma ya zama babban ƙarfin nunin kayan aikin zamani.