Kupisa kwakakungurutswa (extrusion seamless simbi pombi): round chubhu → kudziyisa → perforation → → matatu-roll rolling, rolling kana extrusion → yakavharirwa → saizi (kana kuderedza) → kutonhora → kutwasa hydraulic bvunzo (kukanganisa) → tag → kuchengetedza.

Kutenderedza isina musono chubhu yezvakagadzirwa ichubhu yakatenderera, chubhu embryos inopinda nemuchina wekucheka kucheka kukura kwedhigirii ingangoita mita imwe, uye inotumirwa neconveyor bhandi choto kupisa.Billet inodyiswa muchoto chekupisa, tembiricha inenge 1200 degrees Celsius.Mafuta ehydrogen kana acetylene.Iyo tembiricha yekudzora tembiricha yakakosha kupfeka mhepo chubhu kutenderera, mushure mekuburitswa kwekumanikidza puncher.ayo anowanzo ajairika puncher tapered roller punch iyi, yakakwira kugadzirwa kwakanaka, mhando yechigadzirwa, perforated kuwedzera vhoriyamu, kupfeka akasiyana simbi.Mushure mekuputika, chubhu yakatenderedzwa yanga iri matatu-roll cross rolling, rolling kana extrusion.Mushure mekubvisa pombi saizi.Sizing mill nekumhanya-mhanya kwekoni dhiri muBillet punch kugadzira pombi yesimbi.Iyo simbi pombi yemukati dhayamita inotarirwa nehurefu hwekunze kwedhayamita ye sizing mill drill.Mushure mekuita saizi, pombi yesimbi yekupinda mushongwe yekutonhora nemvura yekupfapfaidza kutonhora, iyo pombi yesimbi mushure mekutonhora, inofanirwa kutwasanudza.Yakatumirwa nepombi yekutakura nekutwasanudza muchina wekuona simbi (kana kuti hydrostatic bvunzo) kuita kukanganisa kwemukati.Simbi pombi dzemukati nyaya dzakadai makatsemuka, mabhuru anozoonekwa.Simbi pombi yemhando yekuongorora asiwo kuburikidza neyakaomarara manyorerwo sarudzo.Simbi pombi yeHunhu Kutarisisa, Kuongorora, shandisa pfapfaidzo pendi pane nhamba, saizi, batch yekugadzira.Nemotokari yetambo yakarembera mudura.