ROSCHEN GROUP
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Reverse Circulation Drill Pipe Remet Thread 4 Inch 4140 Alloy Steel Drill Rod For RC Drilling
Drill Extension Rod Introduction
Our reverse circulation drill rods and drill pipe consist of European hardened 4140 alloy steel tool joints with heavy duty seamless drill pipe and high tensile API 5CT rated wear resistant Inner Tubes. Drawing on our years of experience in the design and manufacture of tough and wear resistant RC drill rods, every aspect of material and production management is optimized. The result is premium quality reverse circulation drill pipes that keep your RC drill rig efficiently producing day after day. RC drilling companies across the globe know they can rely on Harlsan reverse circulation drill pipe.
Testimonial
Roschen reverse circulation drilling rods and inner tubes have outstanding quality, thread Strength and Wear life. Our 4 ½" RRE drill string is still going strong after 3 years in the field. We rely on harlsan quality and service to keep us drilling.
You can be sure that Harlsan RC Drill Pipe will still be going strong when others have worn out.
RC drill pipe or rods using high specification austenitic stainless steel for down-hole surveying are also available.
TECHNICAL SPECIFICATIONS
All standard Lengths from 1m to 6m available
| Sizes | 3", 3 ½", 4", 4 ½", 75mm and 78mm |
| Thread Types | Remet, Metzke, RRE, Westrod, LW, TS and other threads |
| REVERSE CIRCULATION DRILL ROD SPECIFICATIONS | |||||||
| Thread Type | 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 W.T. | 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 W.T. | 5.5mm | 5.5mm | 5.5mm | 5.5mm | 5.5mm | 5.5mm | 5.5mm |
| Spanner Flat | 90mm | 90mm | 90mm | 90mm | 90mm | 90mm | 90mm |
| Weight 3.0m | 75kg. | 75kg. | 95kg. | 75kg. | 95kg. | 75kg. | 95kg. |
| Weight 6.0m | 120kg. | 150kg. | 168kg. | 150kg. | 168kg. | 150kg. | 168kg. |
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