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1)Reliable quality, long service life, rare abnormal breakage during service life.
2)Good flushing effect to ensure high drilling rate
3)Strict quality warranty and compensation rules
2.Description
The thread drill Bits is used to produce large-diameter holes in rocks, usually in the initial stage prior to blasting,but it is also used in non-blasting applications. Thread drilling are used mostly in mining quarries but can be used in a variety of other construction applications. The thread drilling method is growing in popularity, with increases in all application segments, including blast-hole, water well, foundation, oil & gas, cooling systems and drilling for heat exchange pumps. Applications were later found for the DTH method underground, where the direction of drilling is generally upwards instead of downwards.
3. Kaishan various types of core drill bit
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 homogeneous 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 controls.
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.
Carbide Button Shape Selection:
1. Domed/Round Button
Domed/Round Buttons are usually used as gauge buttons of DTH bits, suitable for very 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 medium 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 button 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.
T38 screw joint stone drilling bit
Screw drill bit | Diameter | Weight (kg) | |
mm | inch | ||
Button type | 64 | 2 1/2” | 1.7 |
76 | 3” | 2.5 | |
89 | 3 1/2” | 3.7 | |
102 | 4” | 4.6 | |
Cross type | 64 | 2 1/2” | 1.7 |
76 | 3” | 1.9 | |
Screw connection sleeve | Specification | D | L | Weight (kg) | ||
mm | inch | mm | inch |
| ||
| T38 | 54 | 2 1/8” | 190 | 7 1/12” | 1.8 |
| T45/T38 | 63 | 2 31/64” | 195 | 7 11/16” | 2.8 |
4. package of diamond core bit
4. PIC of Parts of drill hammers for sale:
5.More products of KAISHAN company
6.About KAISHAN Company:
1- Established in 1956 ,Specialized in this line more than 50 years.
2- National Free-inspection Product.
3-Have advanced machining centers, automatic production line shape and heat treatment equipment setc 500 sets from the United Kingdom,United States,Japan,Germany etc.
4-Exported to Asia/South America/Mongolia/ Japan/ South-Africa etc . Have global customers.
7.our market
20%North America
20%Southeast Asia
20%Mid East
20%Eastern Asia
8.Welcome to contact
