Pipe e se nang seamless (GB/T8162-2008) ke mofuta oa phala ea tšepe e se nang seam e sebelisetsoang sebopeho se akaretsang le sebopeho sa mochini. Tekanyetso ea lipeipi tsa tšepe tse seamless li sebetsa ho liphaephe tsa tšepe tse seamless tse tsamaisang maro.

Ho phaella ho likarolo tsa carbon (C) le palo e itseng ea silicon (Si) (ka kakaretso ha e fete 0.40%) le manganese (Mn) (ka kakaretso ha e fete 0.80%, e phahameng ho fihlela ho 1.20%) likarolo tsa motsoako bakeng sa deoxidation, structural. liphaephe tsa tšepe , ntle le likarolo tse ling tsa alloying (ntle le likarolo tse setseng).

Liphaephe tse joalo tsa tšepe tsa meralo li tlameha ho netefatsa sebopeho sa lik'hemik'hale le thepa ea mochini. Likahare tsa likarolo tsa litšila tsa sebabole (S) le phosphorus (P) hangata li laoloa ka tlase ho 0.035%. Haeba e laoloa ka tlase ho 0,030%, e bitsoa tšepe ea boleng bo phahameng ba boleng bo phahameng, 'me "A" e lokela ho ekeletsoa ka mor'a sehlopha sa eona, joalo ka 20A; haeba P e laoloa ka tlase ho 0.025% 'me S e ka tlase ho 0.020%, e bitsoa phala ea tšepe ea boleng bo phahameng ba boleng bo phahameng,' me kereiti ea eona e lokela ho lateloa ke Add "E" ho khetholla. Bakeng sa likarolo tse ling tse setseng tsa alloying tse tlisoang liphaepheng tsa tšepe tse entsoeng ka thepa e tala, litaba tsa chromium (Cr), nickel (Ni), koporo (Cu), joalo-joalo hangata li laoloa ho Cr≤0.25%, Ni≤0.30%, Cu≤ 0.25%. Likahare tse ling tsa manganese (Mn) li fihla ho 1.40%, tse bitsoang tšepe ea manganese.

Phapang lipakeng tsa phala e se nang seamless le pipe e se nang metsi ea metsi:

Phapang e kholo lipakeng tsa eona le phala ea tšepe e se nang seamless ke hore phala ea mokelikeli e se nang seamless e etsoa tlhahlobo ea hydraulic ka bonngoe kapa ultrasonic, eddy current le magnetic flux leakage leakage. Ka hona, khethong e tloaelehileng ea liphaephe tsa tšepe tsa lipeipi tsa khatello, liphaephe tsa tšepe tse se nang metsi ha lia lokela ho sebelisoa. Mokhoa oa boemeli oa phala ea tšepe e sa tsitsang ke bophara bo ka ntle, botenya ba lebota, le phala e teteaneng e se nang seamless e sebelisoa haholo bakeng sa machining, morafo oa mashala, tšepe ea haeteroliki le merero e meng. Thepa ea phala ea tšepe e se nang seamless e arotsoe ka 10 #, 20 #, 35 #, 45 #, 16Mn, 27SiMn, 12Cr1MoV, 10CrMo910, 15CrMo, 35CrMo joalo-joalo.

Pipe ea tšepe e se nang seamless ea sebopeho (GB/T14975-1994) ke lipeipi tsa tšepe tse sa koaeloang tse chesang (tse fetisitsoeng, tse atolositsoeng) le tse batang.

Ka lebaka la mekhoa ea bona e fapaneng ea tlhahiso, liphaephe tsa tšepe tse se nang moroallo li arotsoe ka lipeipi tsa tšepe tse kolobisitsoeng (tse ntšitsoeng ka ntle) le lipeipi tsa tšepe tse se nang moroko tse huloang ke serame. Li-tubes tse batang (tse phuthiloeng) li arotsoe ka mefuta e 'meli: li-tubes tse chitja le li-tubes tse nang le sebōpeho se khethehileng.

Tlhaloso ea Phallo ea Ts'ebetso:
Ho bilika ho chesang (peipi ea tšepe e sa koaetsoeng e sa koaeloang): e chitja billet → futhumatsang → perforation → tse tharo-roller skew rolling, continuing rolling or extrusion → ho tlosoa ha tube → ho fokotsa boholo (kapa ho fokotsa bophara) → cooling → billet tube → ho otloloha → Teko ea khatello ea metsi (kapa ho lemoha liphoso) → tšoaea → polokelo.

Peipi ea tšepe e batang (e phuthoang) e se nang moroho: peipi e pota-potileng → ho futhumatsa → ho phunyeletsa → sehlooho → ho phunya → ho hlapa → ho tlotsa oli (copper plating) → setšoantšo se batang sa mefuta e mengata (ho batang) → billet → kalafo ea mocheso → ho otlolla → Teko ea Hydraulic (phoso ho lemoha)→ tšoaea→bolulo.