I-API 5CT ngumgangatho kwi-oyile ye-oyile yi-American Petroleum Institute, ngokukodwa kwipayipi yeoli, i-tubing kunye ne-casing.

I-API 5CT i-oyile ye-oil casing esetyenziswe kwi-oil well drilling, eyona nto isetyenziselwa ukugaya kunye nokugqitywa kodonga oluchanekileyo lwenkxaso, ukuqinisekisa ukuba ukuqhuba kunye nokugqitywa kwenkqubo yokugaya emva kokusebenza okuqhelekileyo kwamaqula.I-Casing kukugcina amaqula aqhuba ubomi.Njengeemeko ezahlukeneyo zejoloji, urhulumente woxinzelelo onzima ophantsi komhlaba, ukutsala, ukucinezela, ukugoba, uxinzelelo lwe-torsional olusebenza kwisiphumo esidibeneyo sombhobho, apho i-casing ngokwayo, umgangatho weemfuno eziphezulu.Nje ukuba isingxobo sona sonakaliswe ngenxa yesizathu esithile, singakhokelela ekubeni yonke imingxuma yemveliso, okanye ichithwe.

Iimpawu zeMechanical ze-API 5CT API 5CTItyhubhu yentsimbi engenamthungo: