QL40 QL50 QL60 QL80 Down The Hole Hammer With Continuous Sampling
Down The Hole Hammer Introduction
Reverse circulation drilling is also called central sample collection or double-wall drilling. This type of drilling usually uses a double-wall drill pipe. Drilling force is high wind pressure gas, which enters into the hammer through the gap between the outer pipe and the inner pipe. The hammer hit the drill bit to break rock, and the broken rock is collected into the pores on the drill bit surface, and then the rock samples are collected through the sample collection pipe and the drill pipe.
Down The Hole Hammer Features
1. Simple internal structure, good rigidity of parts, ensuring the long service life and convenient maintenance.
2. Collection tube is an integral type, which can be replaced without removing the hammer. After carburizing treatment, the collection tube is good in wear resistance.
3. With the patented design of the drill bit, it only needs to replace the drill bit. The same hammer can be used for holes of different sizes, and the samples can be guaranteed to be free from contamination.
4. The sampling work can be done well, even under various difficult conditions such as loose soil, hard rock and large amount of water.
Down The Hole Hammer Specifications
| Hammer Size | Bit Shank | ROSCHEN Code | Connection Thread | Suitable bit | Working pressure | Air consumption |
| 1" | BR1 | ROS 11 | RD50 box | ￠50-70mm | 0.7-1.75Mpa | 0.7Mpa | 4.5m3/min |
| 1.0Mpa | 4m3/min |
| 1.4Mpa | 5m3/min |
| 2" | BR2 | ROS 22 | RD50 box | ￠70-￠90mm | 0.7-1.75Mpa | 0.7Mpa | 4.5m3/min |
| 1.0Mpa | 4m3/min |
| 1.4Mpa | 5m3/min |
| 3" | DHD3.5 | ROS 32 | API 2 3/8" Reg | ￠90-￠110mm | 1.0-1.5Mpa | 1.0Mpa | 4.5m3/min |
| COP32/COP34 |
| M30 | 1.5Mpa | 9m3/min |
| 4" | DHD340 | ROS 34 | API 2 3/8" Reg | ￠110-￠135mm | 1.0-2.5Mpa | 1.0Mpa | 6m3/min |
| COP44 |
| QL40 |
| SD4 | 1.8Mpa | 10m3/min |
| M40 | 2.4Mpa | 15m3/min |
| 5" | DHD350 | ROS 52
ROS 54 | API 2 3/8" Reg /API 3 1/2" Reg | ￠135-￠155mm | 1.0-2.5Mpa | 1.0Mpa | 9m3/min |
| COP54 |
| QL50 |
| SD5 | 1.8Mpa | 15m3/min |
| M50 | 2.4Mpa | 23m3/min |
| 6" | DHD360 | ROS 62
ROS 64 | API 3 1/2" Reg | ￠155-￠190mm | 1.0-2.5Mpa | 1.0Mpa | 10m3/min |
| COP64 |
| QL60 |
| SD6 | 1.8Mpa | 20m3/min |
| M60 | 2.4Mpa | 28.5m3/min |
| 8" | DHD380 | ROS 82
ROS 84 | API 4 1/2" Reg | ￠195-￠254mm | 1.0-2.5Mpa | 1.0Mpa | 15m3/min |
| COP84 |
| QL80 | 1.8Mpa | 26m3/min |
| SD8 | 2.4Mpa | 34m3/min |
| M80/M85 |
| 10" | SD10 | ROS 100 | API 6 5/8" Reg | ￠254-￠311mm | 1.0-2.5Mpa | 1.0Mpa | 22m3/min |
| Numa100 | 1.8Mpa | 40m3/min |
| ROS 100 | 2.4Mpa | 55m3/min |
| 12" | DHD1120 | ROS 120 | API 6 5/8" Reg | ￠305-￠445mm | 1.0-2.5Mpa | 1.0Mpa | 30m3/min |
| SD12 | 1.8Mpa | 56m3/min |
| Numa120 | 2.4Mpa | 78m3/min |
| Notes: |
| Metzke, Remet thread is available! |
| Any special type shank of DTH Hammer will be available by requests. |
| 1. Methods of Payment: |
| T/T (Telegraphic Transfer) or Western Union or L/C at sight |
| 2. Handling time for an order |
| Only 3or 4 days if we have stock on your request size. Based on order quantity, normally it takes 25 days for production. |
| 3. Shipping way |
| Sample order: we suggest Courier express like DHL/UPS/TNT/FEDEX or by air Bulk order: we suggest by air or by sea. |
| 4. Quality Control |
| We have our own experienced QC. There will be strict inspection and testing for every order before shipping out. |
| 5. After Services: |
| (1). Our sales team will response for your question within 24 hours (Holidays Excluded) (2). Technical Support will be available in any time (3). Free replacement will provide once the failure confirmed caused by our product quality |
| 6.How can we trust your company? |
| We support made-in china and Alibaba trade insurance. Protecting products quality, shipment on time and your covered amount. |
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QL40 QL50 QL60 QL80 Down The Hole Hammer With Continuous Sampling Images
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