Langfang pangolin construction machinery co. LTD
Langfang pangolin construction machinery . LTD
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Hydropower HDD Pilot Hammer System
High-Efficiency Pilot Hammer Used In Hydropower , Railways , Highways
Advantages
1. The hard alloy tooth material adopts high wear-resistant formula, and the tooth breaking rate is less than 2%.
2. The trouser body is made of high-strength high-quality alloy steel. After advanced heat treatment, the breakage rate of pants is less than 1%.
3. Adopting advanced CNC machining technology and advanced alloy tooth assembly technology, the tooth loss rate is less than 1%.
Introduction
Use HDD pilot hammer to cooperate with drilling rig and corresponding drilling tools for impact rotary drilling. The HDD guide hammer is connected to the bottom end of the drill rod. The drill rig drives the drill rod to rotate. Compressed air enters the HDD pilot hammer through the drill pipe, generating a certain frequency of impact force to break the rock. At the same time, the exhaust gas is used to cool the hammer head. Drain the debris from the hole. Since the outer diameter of the HDD pilot hammer is smaller than the drill bit diameter, the pilot hammer can be lowered into the hole as the depth of the drill bit increases. Compared with the pneumatic drill that impacts outside the hole, its impact power loss is small and it can drill deeper holes.
Product parameters
| Bit Diameter | 5 1/2” |
| Pneumatic DTH hammer | Ø125mm |
| Curved sub | 1° and 1.5° |
| Air consumption | 20-30m3/Min |
| Working pressure | 0.7-2.4Mpa |
| Strength | ≥2800N |
| Hardness (HRA) | ≥92 |
| Wind pressure | 0.5-0.7Mpa |
| Drilling depth | 500 m |
| Drilling angle | 38 (°) |
| Dimensions | 80-220 (mm) |
| Weight | 0.06 (t) |
| Drill pipe threads | NC23 NC26(2 3/8IF) D50 D80 NC31(2 7/8IF) NC38(3 1/2IF) |
Field of use
This method is suitable for drilling hard rock formations, the drilling is not easy to deviate, and it is more advantageous to use in water-deficient areas. It is used for drilling hard rock and pebble layers. Compared with conventional rotary drilling and mechanical percussion drilling, the drilling efficiency can be increased several to ten times. It is an advanced technology. Its application areas are constantly expanding. In the past, it was mainly used for blasting and drilling in mines, but it has been used in hydropower, railways, highways, water wells, building foundation piles, and geological prospecting.
Features
1. The drill bit impacts the rock fast, the rock drilling speed is fast, and the rock breaking efficiency is high.
2. The drill bit has high wear resistance and can hit more meters.
3. The drilling quality is high and the drilling speed is fast, without grinding.
4. High-efficiency drill bits can be optimized and customized according to rock structure.
Pic Show
FAQ:
1. How to order the products?
A: Please send the inquiry with detail item description or with Model number.
2. How about the common packing?
A: If there is no special packing demand, we will take it as our normal packing. First in small carton, and then put in the bigger carton together to make sure goods completed.
3. Can I expect a quality products?
A: Yes. mature production technology ensuring the quality satisfy international request.
4. How to check the product are the exact one you want?
A: If possible, please attach one reference picture to avoid any misunderstanding or any links from our website for a better understanding.
5. How to control quality?
A: We have our own experienced QC team,there will be strict inspection and testing for each order before shipping out.
6. Fast delivery time:
A: Usually it takes 25 days for production.only 3 or 5 days if we have stock of your request size.
7. Competitive price:
A: Our factory can supply you the lowest price due to direct sale to customers without distributor!