Active Member
|
[China]
Address: HeBei，China
Contact name:Sophie Zhang
Langfang Pangolin Drilling Tools Co., Ltd. |
|
|
Eccentric DTH Pilot Reamer Bit For Mining Drilling
Introduction
Use HDD Pilot Hammer with drilling rig and corresponding drilling
tools for percussion rotary drilling. The HDD pilot hammer is
connected to the bottom end of the drill pipe. The drill rig drives
the drill rod to rotate. Compressed air enters the HDD pilot hammer
through the drill pipe to generate a certain frequency of impact
force to break the rock. At the same time, waste gas is used to cool the hammer head. Drain
the cuttings out of the cave. Since the outside diameter of the HDD
pilot hammer is smaller than the bit diameter, the pilot hammer can
be lowered into the hole as the bit depth increases. Compared with
the pneumatic drill outside the impact hole, the impact power loss
is small, and it can drill deeper holes.
Features
1. The drill bit has high-speed rock impact, high rock drilling
speed and high rock breaking efficiency.
2. The drilling quality is high, the drilling speed is fast, and no
grinding is required.
3. The high-efficiency drill bit can be optimized and customized
according to the rock structure.
Advantages
1. The body of trousers is made of high-strength high-quality alloy
steel. After advanced heat treatment, the rate of broken trousers
is less than 1%.
2. Using advanced CNC machining and advanced alloy tooth assembly
technology, the tooth loss rate is less than 1%.
Product parameters
| Bit Diameter | 5 1/2” |
| Pneumatic DTH hammer | Ø125mm |
| Curved sub | 1° and 1.5° |
| Drill pipe threads | NC23 NC26(2 3/8IF) D50 D80 NC31(2 7/8IF) NC38(3 1/2IF) |
| 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) |
Field of use
The method is suitable for drilling hard rock strata, which is not
easy to deviate, and it is more advantageous to be used in the area
of water shortage. It is an advanced technology for the drilling of
hard rock and pebble layer. Compared with conventional rotary
drilling and mechanical percussion drilling, the drilling
efficiency can be increased several to ten times. Its application
field expands ceaselessly. In the past, it was mainly used for drilling blast holes in mines,
but it has been used in hydropower, railways, highways, water
wells, building foundation piles, and geological prospecting.
Pic Show
Pangolin (China) Construction Machinery Co., Ltd. is a drill
manufacturer with complete testing equipment and strong technical
force. Our products have a wide range, high quality, reasonable
price, and timely delivery, which are widely used in oilfields,
drilling, non-excavation fields and other industries. Our products
are widely recognized and trusted by users, and can meet the
ever-changing economic and social needs. To
We welcome new and old customers from all walks of life to contact
us for future business relations and mutual success!
