we could supply water swivel and hoist plug, include standard type and heavy duty China Drilling Geological Equipment ltd., is the main professional manufacturer of drilling tool in china, and specializing in the design and manufacture of premium diamond drilling tools for the...

core barrel of BQ NQ HQ PQ, include core lifter,lifter case,stabilizer,landing ring,outer/inner tube, adaptor coupling,locking/C  China Drilling Geological Equipment ltd., is the main professional manufacturer of drilling tool in china, and specializing in the design and...