... drill rods are all manufactured by CNC machines,and made of high quality alloy. 3m &1.5m, multi-heat treat. include BT ... We produce a wide range of drilling tool including drill rod, wireline core barrel (AQ-PQ) and ... hoisting plug, water swiel, wrench. 1.Drill rod: BQ, NQ , HQ, PHD, BT, NT, HT and BW, NW, ... shoe bit (syn. and surface-set, PDC)4.Drill tool: hoisting plug(standard and heavy duty), water ...