Surface set diamond core bits can be used with any type of core barrels.By varying the diamond grade,size,quality and matrix hardness and crown shape.

To avoid excessive matrix wear at the leading edge of each segment.Tingsten carbide inserts are fitted on each side of the waterway.This kind of bits cannot be used in broken or loose formation.

Diamond stone size: Stones Per Carat (spc)

10/15 spc: Soft to Medium Formation

20/25 spc: Medium to Hard Formation

30/40 spc: Medium Hard to Hard Formation

40/60 spc: Hard Formation

60/80 spc: Hard to Very Hard Formation

FACE PROFILES

Semi Round : Standard profile. Very strong in hard broken formation.

Stepped : High penetration and stability but fragile in hard fractured formation.

Conical : Good penetration rate and stability. Stronger than stepped profile.

Pilot : Good core recovery in soft, friable formation especially when used with face discharge. Good stablisation but fragile nose.

Biconical : Only used on thick kerf core bits in soft unfractured formation.

Size Available:
Q series:AQ,BQ,NQ,HQ,PQ,BQ3,NQ3/NQTT,NQ2,HQ3/HQTT,PQ3/PQTT  
T2 Series: T2 46,T2 56,T2 66,T2 76,T2 86,T2 101
T6 Series: T6 76,T6 86,T6 101,T6 116,T6 131,T6 146, T6S 101
T Series:  T36,T46,T56,T66,T76,T86
Z Series:  Z46,Z56,Z66,Z76,Z86,Z101,Z116,Z131,Z146
B Series:  B36,B46,B56,B66,B76,B86,B101,B116,B131,B146
WF Series: HWF,PWF,SWF,UWF,ZWF
WT Series: RWT,EWT,AWT,BWT,NWT,HWT
WM Series: EWM,AWM,BWM,NWM
WG Series: EWG,AWG,BWG,NWG,HWG
Others:   NMLC,HMLC,LTK48,LTK60,BGM,NGM,ADBG,TBW,TNW,
ATW,BTW,NTW,NXD3,AX,NX,NXC,AXT,T6H,4 9/16,NWD4,412F,SK6L146,
TT46,TB56,TS116,CHD10