1.Tighten the bits when screw on. 2.When the bit lower down to the bottom , Should give a soft pressure, slow drilling .After a drilling 0.2m-0.3m with appropriate pump, then give the conventional drilling. 3.Drilling could not be without water, if not fear the normal vibration sound or drill too slow, lift the drill to check without delay. 4.When drill jammed, withdraw first, should not to force the rig start. 5.Drill could not without water, to ensure that the bit will be too hot. 6.Use the bits in right order , big size first, then small one . 30*35*40cm 45kg
The used tricone bits are much more cheaper than the new ones because of the cost is low, but the quality is promised. 30*35*40cm 45kg
1.Tighten the bits when screw on. 2.When the bit lower down to the bottom , Should give a soft pressure, slow drilling .After a drilling 0.2m-0.3m with appropriate pump, then give the conventional drilling. 3.Drilling could not be without water, if not fear the normal vibration sound or drill too slow, lift the drill to check without delay. 4.When drill jammed, withdraw first, should not to force the rig start. 5.Drill could not without water, to ensure that the bit will be too hot. 6.Use the bits in right order , big size first, then small one . 30*40*45 cm 50kg
The steel tricone bit is made of high manganese carbon steel, and our products almost cover all the iadc code, all in good quality and reasonable price. 30*35*40cm 50kg
Drill Bits
A drill chuck is a clamping device that is attached to the spindle of a drill, cordless drill, compact screwdriver, CNC machine tool or hammer drill and has the task of holding insert tools such as drills, bits and other insert tools.
HSS M35 5% Cobalt Centre Drill Bits
HSS M35 5% Cobalt Step Drill Bits Set, Amber FINISHED, 3PCS:4-12, 4-20-4-32MM
170PCS HSS TWIST DRILL BITS SET, 118 DEGREE, DIN338, BLACK FINISHED IN METAL BOX. 1.0-8.0MMX0.5, EACH 10PCS 8.5-10.0MMX0.5, EACH 5PCS.
