Diamond Core Drill Bit (Natural Surface Set)

Descriptions:
The core drill bit with natural-surface set is mainly used to drill relatively complete medium to high -hard formulations. There are 15 to 100 diamonds set on the matrix surface.
It's mainly made up of particles of diamonds, steel body and carbide powder. And the diamonds are utilized for making complex shapes of drill bits.

Features:
a) In drilling soft sedimentary rocks, our natural surface bit could be quite efficient.
b) Various diamond core drill bits (natural-surface set) are available as well as the crown profiles, diamond grades stone sizes and erosion-resistant features.
c) The profiles of the crown directly effects the drilling speed, hole diameter and core recovery.
d) Multistep bit drills usually work at the fastest speed but are less powerful in hard, broken conditions, so round or semi-flat profiles are preferred.

Specifications:
Diamond Core Drill Bit (Natural Surface Set)
It is suitable to drill medium-hard and soft formation stones.  The specifications of Diamond Core Drill Bit (Natural Surface Set ) include AQ, BQ, BQ3, NQ, NQ3, NQTT, HQ, HQ3, HQTT, PQ, PQ3, PQTT, NWF, HWF, PWF, SWF, 412, NWD4, AWT, BWT, NWT, HWT, NTW, BTW, BWG, NWG, HWG, NMLC, and HMLC.  Samples are available.  The diamond core drill bit (natural surface set) is step and half round crown.  Diamond sizes include: 6-10 spc, 10-15 spc, 15-20 spc, 25-30 spc, 30-40 spc, 40-50 spc, and 60-80 spc.  They are A Grade, AA grade, and AAA grade. 

Natural diamond surface set double tube and single tube core bit
Its functions are to drill medium hard and soft formation stones.  The specifications of Natural diamond surface set double tube and single tube core bit are as follows: T2 56, T2 66, T2 76, T2 86, T2 101, TB 56, B66, B76, B86, B101, B116, T6 76, T6 86, T6 101, T6 116, T6 131, T6 146, TNW, T6H, LTK48, and LTK60.  Samples are available.  The natural diamond surface set double tube and single tube core bit is also steps and half round crowns.  Diamond sizes are 6-10 spc, 10-15 spc, 15-20 spc, 25-30 spc, 30-40 spc, 40-50 spc, and 60-80 spc.  They are A Grade, AA grade, and AAA grade. 

Natural diamond noncoring bit
It is for noncoring drilling.  The bits include 56mm and 76mm.  Samples are available.  The natural diamond noncoring bit is step and half round crown. Diamonds sizes include: 6-10 spc, 10-15 spc, 15-20 spc, 25-30 spc, 30-40 spc, 40-50 spc, and 60-80 spc.  They are A Grade, AA grade, and AAA grade.