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W11YNa'ura mai karfin ruwa uku Roll symmetrical Rolling MachineAna iya sarrafa ƙarfe a cikin zagaye, curved da kuma daidai conical kayayyakin, don haka an yi amfani da su sosai a cikin jirgin ruwa, jirgin sama, ruwa da wutar lantarki da kuma inji masana'antu, amfani da sakamakon da aka daidaita yabo. Babban jigilar saman madaidaicin, kasa madaidaicin yana amfani da madaidaicin ɗaga motsi, saboda haka ya sauƙaƙa clamping farantin, yayin da bayan kasa madaidaicin kayan aiki da sama madaidaicin kayan aiki engaged, haɗin gwiwa samar da babban jigilar; gefen roller a matsayin ɗaga motsi, tare da pre-bending da kuma ruwa da zagaye biyu na kowa, tarin da yawa ayyuka a cikin daya. Har ila yau, akwai conical coiler, jirgin sama na'ura mai amfani da ruwa coiler, hannu coiler da dai sauransu.