China RC5.5 A67 143 Drilling Bit

We can design and manufacture according to customer's requirement of the Bit DiaNo. Air holescarbide button shape and the face shape. High air pressure and low air pressure.
1. 10 years manufacturing experience;
2. Certificate: ISO9001:2008
3. Material: Carbide
All products are compatible with many products manufactured by Sandvik, Atlas Copco, etc, all our products are widely used in mining, tunneling, quarrying, construction, and civil engineering project.
DTH bits
1.manufacture as your requirement
2.bit diameter, face shape
3.carbide button shape
4.number of air hole

Bit face shape selection:

1. Drop Center Bit

For high penetration rates in soft to medium hard and fissured rock formations. Low to medium air pressures. Maximum hole deviation control.

2. Concave Face

The all-round application bit face specifically for medium hard and homogenerous rock formations. Good hole deviation control and good flushing capacity.

3. Convex Face

For high penetration rates in soft to medium-hard with low to medium air pressures. It is the most resistance to steel wash, and may reduce the load and wear on the gauge buttons, but poor hole deviation control.

4. Double Gauge Face

This kind of face shape is suitable for fast penetration rates in medium to hard rock formations. Designed for high air pressures and good resistance to steel wash step gauge bit.

5. Flat Face Bit

This kind of face shape is suitable for hard to very hard and abrasive rock formations in applications with high air pressures. Good penetration rates an resistance to steel wash.

Carbife button shape selection:

1. Domed/Round Button

Domed/Round Buttons are usually used as gauge buttons of DTH Bits, suitable for every abrasive and very hard formations.

2. Parabolic/Semi-Ballistic Buttons

Parabolic Buttons are usually used as gauge buttons and front buttons of DTH Bits, suitable for medium abrasive and hard formations.

3. Ballistic Button

Ballistic Buttons are usually used as front buttons of DTH Bits, suitable for medium abrasive and mesium hard formations. They can also be used as gauge buttons if the rock is soft.

4. Sharp Button

Sharp Buttons are usually used as front buttons of DTH Bits for soft formations where fast penetration rates are possible.

5. Flat Button

Flat buttons are usually used as protection buttons to reduce wear on rubbing surfaces of dth bits.

Frequently Asked Question:

1.Are you a manufacturer or a trade company?

We are a manufacturer of rock drilling equipments and pneumatic tools in China over 17 years.

2.How many workers in your factory?

We have more than 700 employees, including factory workers,sales people,QC ,R&D and management team.

3.Where are your company?

We are located in Changsha city,Hunan province,where our first chairman Mao was born.1 and half hours by car from the nearest Huanghua international airport,2 and half hours by CHR express from Guangzhou nan station to Changsha city.

4.Why choose us?

1)We have more than 17 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.

Weclome our dearest customers to Visit our factory and to choose our great product ranges!