Drill Rods
Friction Welded Drill Rods for Waterwells, Mineral Exploration and Ground Engineering
John Lawrie Tubulars manufacture in-house using our purpose built friction welder.
We have the capacity to friction weld steel drill rods up to 152.4 mm diameter (maximum wall thickness of 19.1 mm) and up to 9.5 m long.
We also manufacture tool joints in house using our own CNC lathes.
All our threads are machined and inspected using fully certified and calibrated API thread gauges.
These are made for Down the Hole drilling (hammer), rotary applications (waterwell drilling / mineral exploration and ground engineering) and quarry drilling – all made from high tensile and yield materials to produce a robust, long lasting product. We then nitride harden our tool joints to give even greater wear protection to prolong the effective working life.
Some examples of our product range is shown in the specification sheets above but our range is not limited to these, get in touch to discuss your specific requirements.
We also manufacture shrink and welded style rods up to 406 mm diameter using the same material properties. All welds can be NDT tested upon request.
Frequently Asked Questions
The tubulars arrive at our yard mainly by lorry but occasionally also unload containers. The loads go across the weighbridge before being taken into the yard to be unloaded. The tubulars are visually inspected for any noticeable defects or excessive wear. Wall thickness is checked to make sure it meets our specification. Material is then split into carbon steel or %CR material. Any material which requires cleaning is put to our high-water pressure cleaner before going to storage bays awaiting an order.
We operate two fully automated saws for the cutting of the tubulars to the customer’s specifications. The tubulars require cutting for many reasons including access at the site or the pitch of the rig. We have also had custom made machined spud joints manufactured for use with plain end pipe.
John Lawrie Tubulars have a large inventry of stock on the ground and take pride in our close working relationships with our haulage companies. We can deliver to site as quickly as the next working day!
For the safe and easy unloading of steel pipe at site, we offer customers the option of having the pipe slung with fully certified slings prior to departure from our operations yard. For orders where shorter material is required – 2.5 meters and under – we palletise the load.
