Parallel and Taper Threaded Drill Rods
Parallel Threaded Rods
Available in Metric diameters 42mm and 50mm, and in DCDMA diameters AW – HW. Each rod consists of a steel tube with female threads at both ends, and a replaceable pin-to-pin coupler. The rod tube is manufactured from high quality seamless carbon steel of high strength and uniformity. The male-threaded couplings are manufactured from heat-treated alloy steel for maximum toughness and wear resistance. The rods are suitable for rotary drilling applications.
Taper Threaded Rods
These drill rods have replaceable male and female tool joints screwed into the rod tube. The tool joints are manufactured from heat-treated alloy steel for maximum toughness and wear resistance. The rod tube is manufactured from high quality seamless carbon steel of high strength and uniformity. The rods are suitable for rotary drilling applications.
Technical Data
Parallel Thread
Rod Type | Rod O.D. (mm) | Rod I.D. (mm) | Coupling I.D. (mm) | Threads per inch |
42mm | 42.0 | 32.2 | 22.0 | 4 |
50mm | 50.0 | 37.0 | 22.0 | 3 |
EW | 34.9 | 22.2 | 11.1 | 3 |
AW | 44.4 | 31.7 | 15.9 | 3 |
BW | 54.0 | 38.0 | 17.5 | 3 |
NW | 66.7 | 50.8 | 35.0 | 3 |
HW | 88.9 | 72.0 | 60.3 | 3 |
Tapered Thread
Rod Type | Rod O.D. (mm) | Rod I.D. (mm) | Toot Joint I.D. (mm) | Thread Type | |
BWY | 54.0 | 38.0 | 19.0 | BWY (5 tpi) | |
NWY | 66.8 | 54.0 | 31.7 | NWY (4 tpi) | |
HWY | 88.9 | 73.0 | 44.4 | 2 7/8 API I.F. (4 tpi) | |
HY | 88.9 | 73.0 | 31.7 | 2 7/8 API Reg (5 tpi) | |
NWY | 66.8 | 54.0 | 31.7 | NWY (4 tpi) |
Technical Standards
Manufactured in accordance with International Standards:
ISO 3551-2 : 1992, Rotary core diamond drilling equipment – System A – Part 2: Inch units
ISO 3552-1: 1992 Rotary core diamond drilling equipment – System B: Metric units.