Core Drilling Rig, Diamond Core Bit, PDC Bit manufacturer / supplier in China, offering High Strength API Standard Drill Pipe/Rod for Core Drilling (BTW/NTW/HTW Wireline) - Durable Carbon Steel Construction, Bq Nq Hq Pq Pq3 Hq3 Nq3 Drill Rod Wrench Large Force Inner & out Tube Circle Wrench Drilling Tool for Improved Efficiency in Ore Mining, Industrial Grade Telescopic Wrench Pliers 89mm 108mm Adjustable Mining Tool for Drill Rod Maintenance and so on.