Liphaephe tsa ho cheka tsa DTH li bapala karolo ea bohlokoa ho chekang hohle ha DTH, ho sa natsoe mofuta oa lejoe, botebo ba lesoba kapa thapo ea ho phunya.

Likarolo tsa bohlokoa tsa tube ea boleng bo holimo ea DTH ke ho tšoarella, ho nepahala le ho laola.

 Kopa Pipe :

'Mele oa 1.Pipe: phala e batang e hula e se nang seamless.kahoo pipe e na le boholo bo nepahetseng, centralizer e ntle.
Lisebelisoa tsa 'mele oa 2.Pipe li lekana le Sandvik.
3.Sehokelo sa khoele : Phekolo ea mocheso le naetrojene , kahoo phala e tšoarella haholoanyane 'me ho bonolo ho e kenya le ho e laolla.
4.Friction welding .

Peipi ea ho cheka e tloaelehileng ea DTH:

Bophara: 76mm, 89mm, 102mm, 114mm, 127mm, 140mm;

Bolelele: 1000mm, 1500mm, 2000mm, 3000mm, 5000mm, 6000mm;

Thread: 2 3/8” API REG, 2 7/8” API REG, 3 1/2” API REG, 4 1/2” API REG,

2 3/8 API IF, 3 1/2 API IF