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| Place of Origin | CHINA |
| Brand Name | ROSCHEN |
| Certification | ISO |
| Model Number | 3", 3 1/2", 4< 4 1/2", 5" |
RUSSIA DR115 RC DRILL ROD Metzke, Remet thread for Mining Drilling
Reverse circulation drill pipe/RC DRILL RODS
Drill pipe makes up a significant percentage of investment in a drilling operation; therefore Roschen group limited propose high quality rods with ultrasonically inspected welds which allow you to gain a maximum lifetime through a greater wear resistance and in such way to obtain a return on your investment. Independently of the chosen thread, the inner and outer tubes are manufactured from premium quality tubing. Tool Joints are made from micro alloy steel with the surface Carbonised for wear resistance, this gives excellent fatigue resistance. All threads are manufactured to the highest standard and tested with thread gauges.
Metzke-type thread is a high-grade alloy tool joints and inner tube assemblies, and easily replaceable inner tubes with special joints that offer a better stabilization in the hole with minimal flow.
Remet-type thread is a high-grade alloy tool joints and inner tube assemblies. Remet-type RC pipe consists in sealing o-rings on the pin portion of the inner tube assembly, providing optimal inner tube sealing and airflow.
Thanks to the heat treated tool joints, you can obtain a perfect concentricity and axial alignment.
| Roschen Dual Wall RC Drill rod specification: | ||||||||||
| Pipe OD | Outer Tube | Inner Tube | Thread | Spanner Flat | Weight | |||||
| outer diameter | inner diameter | wall thickness | outer diameter | inner diameter | wall thickness | 3M | 6M | |||
| 3 1/2'' | 88.9 mm | 81.8 mm | 5.3 mm | 38.1 mm | 32.6 mm | 5.5 mm | 3 1/2'' Remet | 90 mm | 77 kgs | 125 kgs |
| 4'' | 101.6 mm | 94.6 mm | 7.1 mm | 50.8 mm | 45.3 mm | 5.5 mm | 4'' Remet | 90 mm | 77 kgs | 155 kgs |
| 4'' | 101.6 mm | 94.6 mm | 7.1 mm | 50.8 mm | 45.3 mm | 5.5 mm | 4'' Metzke | 90 mm | 77 kgs | 155 kgs |
| 4'' | 101.6 mm | 94.6 mm | 7.1 mm | 50.8 mm | 45.3 mm | 5.5 mm | 4'' Matrix | 90 mm | 77 kgs | 155 kgs |
| 4 1/2'' | 114.3 mm | 107.2 mm | 7.1 mm | 63.5 mm | 58 mm | 5.5 mm | 4 1/2''Remet | 90 mm | 97 kgs | 172 kgs |
| 4 1/2'' | 114.3 mm | 107.2 mm | 7.1 mm | 63.5 mm | 58 mm | 5.5 mm | 4 1/2''Metzke | 90 mm | 97 kgs | 172 kgs |
| 4 1/2'' | 114.3 mm | 107.2 mm | 7.1 mm | 63.5 mm | 58 mm | 5.5 mm | 4 1/2''Matrix | 90 mm | 97 kgs | 172 kgs |
Adavantages:
1. Industry leading technology and intellectual property
2. State of the art manufacturing operations, ensuring consistent quality
3. A thorough understanding of RC drilling and applications.
Working Principle:
Reverse circulation is achieved by blowing air down the annulus of the rod, the differential pressure creating air lift of the water and cuttings up the inner tube which is inside each rod. It reaches the deflector box at the top of the drill string then moves through a sample hose which is attached to the top of the cyclone.
The drill cuttings travel around the inside of the cyclone until they fall through an opening at the bottom and are collected in a sample bag. For any drill hole there will be a large number of sample bags, each one marked to record the location and drilling depth that the sample was obtained.
The collected series of sample bag cuttings are later taken for analysis to determine the mineral composition of the drill hole. The analysis results of each individual bag represents the mineral composition at a particular sample point in the drill hole. Geologists can then survey the drilled ground analysis and make decisions about the value of the overall mineral deposit.
About us:
ROSCHEN Reverse Circulation drilling (RC) , from size 3" to 10.75", is a technique of drilling that uses dual wall drill rods that consist of an outer drill rod with an inner tube. By using compressed air to extract rock fragments sample,the samples travel through rods to a sample splitter at surface, avoiding all contact between the samples and the borehole wall that allows samples to be retrieved with minimal contamination,which is mainly used in deep hole exploration and mining grade control.
Delivery Way:
By Air, By express or By Sea
Quality warranty:
Our products are made of high quality steel and all spares parts are inspected strictly before shipping. We have quickly responses for your complaint and suggestion.
Package:
Using ply-wooden cases and pallet for package to protect the products and avoid the damagement during transportation. Also we can customize package according to your special requests.
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