Hejian Deris Petroleum Drilling Equipment Co., Ltd. mainly operates tricone bits, three die steel teeth drill bits, three disc set teeth drill bits, diamond drill bits, PDC bits composite piece, roller bits, drill stems, catch all, crabs, lift subs, lifting hooks, stationary rings, centralizers, drilling accessories, etc. You can customize the bits of different layers, calibers, and alien drills.
Our products meet API standard and the bit of international general type with IADC (the international associ...
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