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.
Drill Rod Type
Outside Diameter (mm)
Inside Diameter (mm)
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)