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 
Q: Are you a manufacturer or trading company?
A: We are a manufacturer, the factory is located in Changsha, Hunan, China.
Q: What are your main products?
A: Our products cover diamond core bit, non-coring bit, reaming shell, core barrel, casing pipe, drill rod, soil sampling equipment and other accessories.
Q: How about the delivery terms?
A: 1. Payment: T/T, L/C, Western Union, Paypal.
2. No request on min. order quantity.
3. Transportation: By DHL/UPS/Fedex express, air, sea, train.
Q: How about discount?
A: Price is based on order quantity.
Q: Do you accept sample order?
A: Yes sure, please contact us for details.
Q: How about your after-sales service?
A: As a manufacturer, we offer promt technical support for all issues. Besides we accept goods return or replace for quality problem.
Q: How does your company control the quality?
A: Quality always comes first. In order to guarantee quality for our products, Diyfia always makes a serious inspection for all products and raw materials in strict procedure. We have obtained certificate of ISO9001:2000 in 2004.
PRODUCTS
CONTACT US
Hunan DIYFIA Group Company
Add: R2105, Xingfu Road, Tianxin Area, Changsha City, Hunan, China
Office No.: +86 0731 85786177
Fax: +86 0731 85535877
https://diyfia.en.alibaba.com/
HUNAN DIYFIA GROUP COMPANY
0731-85786177
Addr ：Address: F25, 1 Building, Yingxin Road, Yuhua Area, Changsha City, Hunan, China.
Mobile：13875958166（Snow Huang）
Phone：0731-85786177
E-mail：diyfia@diyfia.com
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