coal mining drill bits online manufacture

Product Name: 238mm MRE190 DHD360 Hammer Shank Symmetric Concentric Casing Drilling System For Coal Mining Matched hammer: Hammer DHD360 Matched casing pipe OD: 190mm MRE Concentric under reaming drilling ... Read More

Product name: 5inch High Air Pressure DTH Hammer With DHD350 Shank For Coal Mining Product category: Down The Hole Hammer Matched hammer: Hammer DHD350 Connection thread: API 2 3/8 REG Working pressure(bar): 10... Read More

Product name: CIR90 Low Air Pressure DTH Drill Hammer For Underground Coal Mine Equipments Product category: Down The Hole Hammer Connection thread: F48*10PIN Working pressure(bar): 4-12 Hole range(mm): 282-424 ... Read More

.OD 127mm MRE Dual Rotors Eccentric Overburden Casing Drilling Bit CIR Shank Description MRE Dual Rotors Eccentric Overburden casing drilling system, At clockwise rotation, reamer bits expand to bring the ... Read More

OD 133mm MRE Dual Rotors Overburden Casing Drilling bit CIR110 Shank Description MRE Eccentric Dual Rotors system for drilling overburden casing, Reamer bits enlarge to insert the casing pipe into the hole when ... Read More

OD 133mm MRE Dual Rotors Overburden Casing Drilling Bit CIR110 Shank With Casing Pipe Description MRE Dual Rotors Eccentric Overburden casing drilling system, At clockwise rotation, reamer bits expand to bring ... Read More

Caing tube OD 133mm MRE Dual Rotors Overburden Casing Drilling Bit DHD340 Shank For Soft Hard Rockformation Description MRE Dual Rotors Eccentric Overburden casing drilling system, At clockwise rotation, reamer ... Read More

Product name:114MM single use symmetric casing drilling bit for waterwell drilling Product model: Mring casing bit Matched hammer: Hammer DHD3.5 Matched casing pipe OD: 108mm Kingdrilling MRING overburden ... Read More

Product name: High performance 133mm symmetric 3 reamers casing drilling system for soft and hard rock formation Product category: High performance 133mm symmetric casing drilling tools Matched hammer: Hammer ... Read More

Product name: Extention T51Thread extention rod Product category: Drilling rod Threaded Connection: R22, R25, R32, R38, T38, T45, T51 Length: 1830mm KINGDRILLING thread drill rods are made of high-intensity ... Read More