DHAMMAAN tubbooyinka daloolista DTH waa kuwo is jiid jiid leh, badanaana duntu waa isku xirka API caadiga ah, sida 2 3/8 ″ API REG thread, 3 1/2″ API REG dun ama API HADDII dunta, iwm. Marka loo eego codsiga macaamiisha, laga bilaabo 1000mm ilaa Dhererka 5000mm ee tuubooyinka, OD waxaan ku siin karnaa 50mm, 60mm, 76mm, 89mm, 102mm

Baalasha alaabta:

1:Nitriding on the dunta wadajirka usha si loo hagaajiyo adkaanta dusha dunta iyo kordhinta caabbinta xirashada dunta.
2:Isticmaalka R780 sida walxaha jirka usha si loo hagaajiyo caabbinta xirashada iyo xoogga, 42 Cr Mo walxaha isku xira dunta.
3: Waxay qabataa daawaynta xanaaqsan si loo yareeyo miisaanka usha iyada oo la ilaalinayo xoogga alxankatuubada dthwaa 6.5mm halka alxanka bedkiisu yahay 8.5mm).