Shandong China Coal Industrial&Mining Supplies Group Co.,Ltd
Rock Drill Rods,Core Drill Bits,Tungsten Core Drill Bit,Jack Hammer Drill Bits
Rock drill bit and rock drill rod are important accessories of the rock Drilling Machine.
There are many types of drill bits like tungsten carbide tapered drill bits, chisel bit, threaded button bit, cross bit, which generally used to drill holes within diameter of 50mm in middle rock by light-duty drills that models like Y6, Y10, Y24. The button bits have two flushing holes and are available in three types: flat, convex and concave, and cross drill bits is mainly used for very hard rock.
The drill rod has other name is drill pipe, is a device used to transport the drilling mud to the drill bit and to raise, lower or rotate the bottom hole with the drill bit. Drill rods are divided into square drill pipe and heavy wall drill pipe.
Range of application according to hardness Level:
The hardest: like compact quartz and basalt
Strong hard: like hard quartz, the hardest sandstone
Hard: normal sandstone, iron ore
Middle hard: limestone, soft conglomerate