Experience superior drilling performance with our diamond core drill bits designed for maximum efficiency and longevity

 
Our Wire-line Drill Tools meet stringent international standards making them a and choice for drilling operations worldwide

Roschen casing pipe used materials N80 oil casing pipe, and 4130 materials. Aslo, the thread was heat treated.
Roschen DCDMA standards of AW, BW, NW, HW, PW, HWT, PWT casing tube are direct connecting casing, or called flush joint casing, male and female threads are set respectively at two ends.