E kentsoeng ka ho chesa (peipi ea tšepe e se nang seamless ea extrusion): tube e chitja → futhumatsang → perforation → → rolling tse tharo, rolling kapa extrusion → deched → sizing (kapa ho fokotsa) → pholiso → ho otlolla tlhahlobo ea hydraulic (orflaw) → tag → polokelo.

Rolling seamless tube ea lisebelisoa tse tala ke tube e chitja, mahe a emolisitsoeng a kena ka mochini o sehang ho theola kholo ea tekanyo e ka bang mithara e le 'ngoe, ebe o romelloa ke ho futhumatsa sebōpi sa conveyor.Billet e kenngoa ka seboping sa ho futhumatsa, mocheso o ka bang likhato tse 1200 tsa Celsius.Mafura bakeng sa hydrogen kapa acetylene.Taolo ea mocheso oa sebōpi ke ea bohlokoa ho roala tube ea moea ho pota-pota, ka mor'a ho lokolloa ha puncher ea khatello.tseo ka kakaretso li atileng ho feta li-puncher tapered roller punch ena, ts'ebetso e phahameng ea tlhahiso, boleng ba sehlahisoa, molumo o atolositsoeng oa perforated, o roala litšepe tse fapaneng.Ka mor'a ho phunyeha, tube e pota-potileng e 'nile ea e-ba li-roll cross rolling, rolling kapa extrusion.Ka mor'a hore extrusion theoha boholo ba pipe.Leloala la boholo ka ho potoloha ka lebelo le phahameng la ho phunya khoune ho punch ea Billet ho etsa phala ea tšepe.Phaephe ea tšepe e ka hare ho bophara e khethoa ke bolelele ba bophara ba ka ntle ba ho cheka leloala la sizing.Ka mor'a hore sizing, phala tšepe ho kena ka tora tsidifatso ka metsi fafatsa tsidifatso, phala tšepe ka mor'a hore tsidifatso, ho ke ke ho hlokahala hore ho otloloha.E rometsoe ke conveyor pipe ka ho otlolla mochini o lemohang tšepe (kapa tlhahlobo ea hydrostatic) ho etsa phoso e ka hare.Litaba tsa ka hare tsa lipeipi tsa tšepe tse kang mapetsong, li-bubble li tla fumanoa.Tlhahlobo ea boleng ba lipeipi tsa tšepe empa hape le ka khetho e matla ea matsoho.Pipe ea tšepe ea Tlhokomelo ea Boleng, Tlhahlobo, sebelisa pente ea spray ka palo, boholo, beche ea tlhahiso.Ka koloi ea cable e leketlileng ka ntlong ea polokelo.