.

Berlian inti bor

Pengeboran minyak PDC kami sedikit / minyak & gas bor sedikit,Website:, yang digunakan untuk pengeboran ladang minyak. Dibandingkan dengan bit baja tubuh, tubuh matriks lebih cocok untuk hard rock. Dan seumur hidup bit adalah dua kali daripada tubuh baja.


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밀링 도구 전문적이 고 생산적인 공장, HAINAISEN 중 하나입니다 최고의 중국 밀링 도구 제조 업체. 우리 도매 밀링 도구에 환영, 우리 항상 제공 하는 저렴 한 제품 있다.
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