Detail: Hand-HeldTaperedButtonBitWithLloyTaperedHexagonalDrillSteels All our Tapered Button Bits is ideal for short hole drill & blast, as well as roof bolting applications, our hand-held system....
Xuanhua Jinke Drilling Machinery Co., Ltd. ( JINKE) located in Xuanhua, Hebei Province, 130 km from Beijing, for more than 20 years we have specilized in research, development and produce of rock....
Detail: Valveless High Pressure DTH Hammer Downhole Drilling Tools With Foot Valve Introduction ItisakindofvalvelesshighairpressureDTHhammerwithfootval ve. ....