Ts'ebetso ea "Continuous Rolling tube" (eo ka mor'a moo e bitsoang MPM) ke mandrel e bolelang ho roala kholomo e telele ea capillary e tsoelang pele ka letoto la rack, mokhoa oa ho roala le oa ho roala o lumellana le litlhoko tsa boholo ba phala ea 'm'e. Tšobotsi ea eona e khethollang ke bokhoni bo boholo, bokhoni bo phahameng, bolelele bo botle ba phala e se nang letho le boleng ba sehlahisoa, boholo bo boholo; empa matsete a eona a maholo le thekenoloji e amanang le eona le taolo ea othomathike e hlokang ho feta.

rack ea MPM bakeng sa mofuta oa li-roll tse peli, sebopeho se ts'oana haholo le leloala le tloaelehileng la rolling habeli. Ho itšetlehile ka motsamao oa mandrel MPM ka aroloa ka botlalo-phaphametseng le seka setopo setopong mandrel leloala mefuta e meraro.

Lilemong tsa bo-1970 pele MPM e sebelisa ts'ebetso ea mandrel e phaphametseng ka botlalo. Ho tloha punch ho phunyeletse capillary ka mor'a hore mandrel ho kena phala rola mochini rolakoang, ho thetheha ha rolling tsoa leloala ke semelo ho hula khutlela mandrel rollers, ho na le bareng tima mochine ho tswa ho rola mandrel setho se huloa, rolling ka har'a mohato o latelang, 'me a khutlela ho mandrel leloala kamohelo ka mor'a tsidifatso, kena hape potoloho e latelang ea mosebetsi.

1970s Fora le Italy li hlahile ka mandrel halofo setopong le setopong ea MPM. Ha e le hantle, mekhoa ena e 'meli ea ts'ebetso ea mochini oa mandrel tube rolling, e alima mokhoa oa ts'ebetso oa mandrel oa mochine o rollang oa li-roll tse tharo.
Halofo a bolokoa mandrel mokhoa oa ho sebetsa, ke ka tshebetso ya ho bidikang, lebelo mandrel motsamao e lekanyelitsoe, mandrel ea nang le karete e clamped ho ka tlaase ho phuthoa ka pele lebelo la workpiece. A bolokoa mandrel mokhoa oa ho sebetsa, ntle le nakong rolling, lebelo mandrel motsamao e lekanyelitsoeng, thae qeta ka mor'a ho bilika, mandrel ke mong'a karete hula khutlela mosebetsing ho qala boemo.

Lilemong tsa morao tjena, Y-e bōpehileng joaloka tse tharo MPM tšoauoa PQF leloala, latela tsitsipano-fokotsa thekenoloji ho tloha rolara bobeli ho liphetoho tse tharo rolara, kahoo rolling tshebetso rolling deformation maemo a khatello ea kelello le deformation kabo, mechine, lisebelisoa tsa motlakase mojaro kabo, rolling lebota botenya le lerako botenya tolerances 'me kahoo o na le leloala tse peli leloala melemo e ke keng ea lekanngoa. Ts'ebetso ea eona e tsitsitseng ea ho roala e ka ntlafatsoa phala ea bophara ba likarolo, sebaka se ka tlaase sa flange kapa ho phatloha Lin Wen phenomenon tšimong ea liphaephe tse tšesaane tse nang le marako le ho roala phala e phahameng ea alloy ho feta tenyetseha le moruo.