Wireline Drill Rods
Our wireline drill rods are manufactured from the highest quality raw materials, i.e. cold drawn carbon seamless steel tubes of grade SAE 1541 / SAE 4130 / SAE 5130. These tubes have extremely high mechanical properties, and straightness better than 1:2500 (geotechnical grade) or 1:5000 (mining grade).
All rods are supplied with heat treated rod ends, hardened to 30 – 35 Rockwell throughout the wall thickness to a length of 200mm.
As an option for very demanding applications, the threads may also be induction case hardened to 50 – 55 Rockwell to a depth of 1mm (box thread) or 0.5mm (pin thread).
Standard rod lengths are 1.5m or 3.0m, but other lengths can be supplied on request.
Specification | Drill Rod Type | ||||
|---|---|---|---|---|---|
A W/L | B W/L | N W/L | H W/L | PHD | |
Outside Diameter (mm) | 44.5 | 55.6 | 69.9 | 88.9 | 114.3 |
Inside Diameter (mm) | 34.9 | 46 | 60.3 | 77.8 | 101.6 |
Thread T.P.I. | 4 | 3 | 3 | 3 | 2.5 |
Weight (kg/m) | 4.7 | 6.2 | 7.8 | 11.7 | 17.7 |
Mechanical Characteristics
Minimum Tensile Strength 820 N/mm2
Minimum Yield Strength 680 N/mm2
Minimum Elongation 15%
Hardness 250-280 BNH
Dimensional Tolerances on Diameter ± 0.25mm
Straightness 1:2500 or 1:5000 (on request)
