Scope of application: It is suitable for rotary drilling in coal mine geology, underground gas drainage, water injection, and drainage, etc
Applicable rock formation: suitable for high-speed drilling in 6<f<12 relatively complete soft-medium-hard rock formations, large nozzles, and fast chip removal. Note: “F” is the firmness coefficient of the rock, called: Platts coefficient, which is the reference level for the coal industry to distinguish rock hardness.
Scope of application: It is suitable for rotary drilling in coal mine geology, underground gas drainage, water injection, and drainage, etc.
60mm PDC drill bit
Suitable for soft, medium, and hard formations. Improve the response to complex rock drilling Into the level.
75mm PDC drill bit.
Super strong material promotes gauge wear resistance to provide long bit life. φ60mm, 65mm, 75mm, etc.
13mm PDC drill bit.
for Mining: PDC Coring Bits, PDC Drill Bits.
steel body PDC bit.
matrix body PDC bit.
|Rock||Hardness Category||Soft||Middle soft||Medium||Middle Hard||Hard||Hardest|
|Representative Rock||Sandstone, Limestone, Marble, Dolomite, Pyrite, Unstable Granite, Shale||Granite, Solid Sandstone, Conglomerate, Limestone, Quartz Veins|
Concave drill bit