Double Wall Drill Pipe (Rod) for Reverse Circulation (RC) Hammers Re542 Re543 Re545 RC Hammer Drilling
HEFEI ROSCHEN TOOL CO., LTD.- Standard：RoHS, AISI, API
- Usage：Oil Mining, Coal Mining, Well Drilling, Ore Mining
- Material：Carbon Steel
- Transport Package：Wooden Box
- Specification：RC Drill Pipe
- Trademark：ROSCHEN
Base Info
- Model NO.：6 5,8", 10 3,4"
- Origin：China
- HS Code：84314320
- Production Capacity：10000
Description
* Roschen offers reverse circulation drill string components in accordance with the requirements of the customer. Reverse circulation drill pipes available in different model, diameters and length.
REVERSE CIRCULATION DRILL ROD SPECIFICATIONS Type / Thread Remet Remet Remet Metzke Metzke Matrix Matrix Rod O.D. 3 1/2" 4" 4 1/2" 4" 4 1/2" 4" 4 1/2" Outer tube O.D. 88.9mm 101.7mm 114.3mm 101.7mm 114.3mm 101.7mm 114.3mm Outer tube I.D. 81.8mm 94.6mm 107.2mm 94.6mm 107.2mm 94.6mm 107.2mm Outer tube WT 5.3mm 7.1mm 7.1mm 7.1mm 7.1mm 7.1mm 7.1mm Inner tube O.D. 38.1mm 50.8mm 63.5mm 50.8mm 63.5mm 50.8mm 63.5mm Inner tube I.D. 32.6mm 45.3mm 58mm 45.3mm 58mm 45.3mm 58mm Inner tube WT 5.5mm 5.5mm 5.5mm 5.5mm 5.5mm 5.5mm 5.5mm Spanner Flat 90mm 90mm 90mm 90mm 90mm 90mm 90mm Weight 3.0 m 77 kg. 77 kg. 97 kg. 77 kg. 97 kg. 77 kg. 97 kg. Weight 6.0 m 125 kg. 155 kg. 172 kg. 155 kg. 172 kg. 155 kg. 172 kg.
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.
REVERSE CIRCULATION DRILL ROD SPECIFICATIONS
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.