90 Mm 3 9/16 Inch DTH Hammer Drill Bits For Rock , Down The Hole Drilling Tools

The Drill Bits are made up of grade hard alloy and special steel, usually matched with the rock drill, to drill the rock. The drill tools are utilized in science mine, geologic exploration, water conservancy construction, electricity, traffic, tunnel, quarry, national defence stone project etc.

Feature

1. Suitable for high pressure drilling rigs

2. Water well drilling

3. Record breaking penetration

4. Exploring Civil Engineering Applications

5. Lowest cost per foot drilled

6. Simple & robust design

7. Exploring Civil Engineering Applications

8. Foot Valve not required in the bit

9. Longer parts life

10. Maximizes efficiency

11. Develops greater power for any compressor capacities

Products Parameters:

1. high and low air pressure down-the-hole drill bits

2. Face type: drop center bit/concave face/convex face/double gauge face/flat face bit

3. Carbide button shape: domed/round button parabolic/semi-ballistic button ballistic button sharp button flat button

4. Drill rock type: Granite, Marble, Limestone, Basalt, ect.

5. Project types: Blast holes, Quarry , Anchoring, Infrastructure, Geothermal holes, Well drilling,ect.

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.

Caibide BUtton Shapge		Domed / Spherical Button Domed / Spherical Buttons are usually used as gauge buttons of DTH Bits, suitable for very abrasive and very hard formations.
		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.
		Ballistic Button Ballistic Buttons are usually used as front buttons of DTH BIts, suitable for medium abrasive and medium hard formations. They can also be used as gauge buttons if the rock is soft.
		Sharp Button Sharp BUttons are usually used as front buttons of DTH bits for soft formations where fast penetration rates are possible and button breakage is minimal.
		Flat Button Flat buttons are usually used as protection buttons to reduce wear on rubbing surfaces of DTH bits.

FAQ

1.The Quality of Drill bit?

We have many series of rock bits,quality grades are different,and prices are different.We believe,the proper tools with higher cost-performance isthe most impormant.

3.How to send inquiry?

It is better send us detailed specificaltions of products,it is better attaching some photos for better understanding.If you are not experienced on drilling fields,for example,many customers don't know IADC code,please feel free,jusst tell us the applications like oil/gas/geothermal/HDD/ware/mining,depth of well,average hardness of rocks,then we will advise suggestions and solutions.

      Changsha Chaojingang machinery manufacturing Co., Ltd is a modern high-tech enterprise, which is specialized in researching and manufacturing rock drilling machine and pneumatic tools. The company has rich experiences for scientific research and production. It produces prime property and quality rock drilling products by using high-quality raw materials, utilizing advanced production technology and imposing strict quality inspection. The products produced by Super Drill are sold well all over China and exported to over 20 countries, such as Korea, Brazil, Australia, and South Africa etc, high praised by users for its prime property and quality.

      Changsha Chaojingang is located in Liuyang, Changsha, Hunan, which is known as a beautiful fireworks city. It occupies 26600m2, and workshop has 22000m2.With more than 100 staffs, our company includes 26 specialized technicians and 8 senior engineers. And we are equipped with nearly 400 sets of advanced equipment required for manufacturing rock drilling machine and pneumatic tools. We have designed and manufactured the following products: normal circulation DTH hammers and bits, reverse circulation hammers and bits, various kinds of normal and reverse circulation hammers and bits, eccentric drilling equipment, symmetric drilling equipment, casting system, various kinds of threaded bits, shank adapters and coupling sleeves, new-style wells geothermal drilling rig, open-air blasthole drilling rig, all kinds of tool joints and drill pipe and spare parts for drill rig. Our products are widely used in earth-rock work, mining, well drilling, building engineer, geothermal drilling, civil project etc.

      With innovative spirit and development goal to provide solution for rock drilling technique, we always guide ourselves with service concept “focus on users” requirements and meet customers' need with prime quality, advanced technology and full service. Sincerely hope we could achieve win-win to all customers and create a better future.