Home Toolbuy Products Core Drill /Surface Set Core Bit for Mining Exploration

Core Drill /Surface Set Core Bit for Mining Exploration

Core Drill /Surface Set Core Bit for Mining Exploration
Price: US $ 20-50/Piece
Min Order: 1/Piece
Pay Type: L/C,T/T,D/P,Western Union,Paypal

                                                            Surface Set Core Bit

surface set diamond bits will provide higher rates of penetration than in softer formations due largely to the greater degree of exposure of the individual diamond crystals.

Sizes Available:

Diamond core drill bits and diamond non-core drill bits

A-Gauge Core Bits: A, A-RSG, AWG(AX), AWM, AWT, LTK48

B-Gauge Core Bits: B, B-RSG, B-2.400, B3, BWG(BX), BWM, BWT, LTK60, TBW, BX

N-Gauge Core Bits: N, NMLC, NWG(NX), NWM, NWT, TNW, NX

H-Gauge Core Bits: N, HMLC, HWF-Long, HWF-Short, HWG(HX), HWT, 412F, HX

P- Gauge Core Bits: P, P3, PWF-Long, PWF-Short

S- Gauge Core Bits: SWF-Long, SWF-Short

U- Gauge Core Bits: UWF-Long, UWF-Short

Z- Gauge Core Bits: ZWF-Long, ZWF-Short

T, TT, T2 &TB Series Metric Core Bits: T36, TT46, T2-46, TB56, TT56, T2-56, T2-66, T2-76,
T2-76 coreline, T2-86, T2-86 coreline, T2-101, T2-101 coreline

T6 Series Metric Core Bits: T6-76, T6-86, T6-101, T6-116, T6-131, T6-146

T6S Series Metric Core Bits: T6S-76, T6S-86, T6S-101, T6S-116, T6S-131, T6S-146

 and all other standard CDDA, DCAMA, Crealius, and ISO sizes .



This type of bit is primarily recommended for use in drilling relatively soft, abrasive, unconsolidated formations that are not effectively drilled by impregnated diamond bit. It is also recommended for use in drilling harder formations where the available rotary speeds and bit loads are insufficient to use impregnated diamond bits due to drilling equipment limitations.

Principle of choosing diamond size--the harder the rocks, the smaller the diamond size should be.

Diamond Size

Formation Drilled

10/20 SPC*

Soft formation

20/30 SPC

soft to medium formation

30/40 SPC

medium formation

40/60 SPC

Medium to hard formation

< 60/80 SPC

Very hard formation

*SPC is short for Stone per Carat

**40/60 is FIT standard diamond size for natural diamond core bit

***Other sizes are available as per request

  • Profiles of surface set core bit:

  • Semi-round: it is mostly used in the core bit with bit kerf thickness less than 11mm. It can drill various formations. The core bit with semi-round profile has long bit life, and can avoid damage; while the bit kerf thickness is over 11mm with semi-round profile can be applied in drilling abrasive formations.  
  • Stepped profile: core bit kerf thickness over 11mm usually has this kind of profile. Bit with Stepped profile can obtain high penetration rate with good stability in drilling. However, it is not recommended in fractured very abrasive formations. When the core bit of bit kerf less than 11mm has stepped profile can facilitate drilling speed and have better drilling stability.
            Stepped profile                                          Semi-round profile

We can manufacture all kinds of I diamond core drill bits and reaming shells according
 to customer's special requirement.

Warehouse :

Why choose us?
1)We have more than 15 years of researching,developing, manufacturing  and exporting
high quality rock drilling equipments and penumatic tools to the global market.
2)High quality compatible with Sandvik, Atlas Copco, Ingersoll Rand etc...
3)Unbeatable price
4)Excellent service.
5.Which port do you shipping from?
We usually ship container from Shanghai port.Guangzhou port is available too.
6.Can you accept OEM & ODM ?
Yes, both of them are acceptable.
7.What is your minimum order quantity?
Our MOQ are 1pc or 1 complete set, the price may rely on the order quantity.
8.What is your payment term?
We can accept T/T, L/C at sight, West union and in cash.
9.How about the delivery time?
It all depends,generally it takes about one month both in peak and off season.
Prod Model: PQ, SQ, PQ3, HQ3, NQ3, BQ3, NQ2, WL-56, WL-66,
Model No.: Bq Nq Hq Pq
Kind: Surface Set Core Bit
Manufacturing Arts: Sinter
Length: as Per The Sizes of The Bits
Material: Diamond
Shape: Round
Customized: Non-Customized
Qualtiy: Top
Delivery Time: 3-5days
Price: Competitive
Fair International Trading Co., Ltd is one the professional manufacturer and supplier of various of quality Drilling Tools and Equipment for Mineral Exploration, Site Investigation and Water Well Construction, such as Core Bits(Impregnated Diamond Type, Surface Set Diamond Type, Electroplated Diamond type etc. ), Non-Coring Bits DTH hammers and bits, RC hammers and bits, DTH drill rods and top hammer drilling tools.

All our products are under strict quality control and inspection, there are 8 times heat treatment operations to ensure the ideal hardness of our products; And all of our products have passed the ISO9000 quality management system certificate. We have already won some customers and built cooperation with some mining companies, construction and drilling companies in southeast Asia, Africa, Australia and South America. Ica, Russia and so on.

We believe in Fair Quality, Fair Price, Fair Trading, we are aim to provided quality, convenient, quick service to customer and have gained good reputation in the market.

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  • Changsha Fair International Trading Co., Ltd.

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