Rotary Percussive
Rotary Percussive for the world’s leading geotechnical contractors
98.51% Less CO2 than Prime Steel!
Used in the toughest site conditions
Our rotary percussive systems are used in some of the toughest site conditions by some the world’s leading geotechnical contractors.
Casing crowns faced with buttons or plate tungsten carbide are available for each size of rod, blank pin threaded shoes can be supplied for each size of rod for coating with TC granular hard facing finish.
| Outside Diameter (mm) | Nipple Bore (mm) | Thread Type | Joints |
|---|---|---|---|
| 73 | 48 | Cylindrical/Conical | Coupled/Friction Welded |
| 76 | 50 | Conical | Coupled/Friction Welded |
| 89 | 64 | Cylindrical/Conical | Coupled/Friction Welded |
| 102 | 72 | Cylindrical/Conical | Coupled/Friction Welded |
| 114 | 88 | Cylindrical/Conical | Coupled/Friction Welded |
| 133 | 108 | Cylindrical | Coupled/Friction Welded |
| 152 | 127 | Conical | Coupled/Friction Welded |
| 178 | 146 | Conical | Coupled |
| 194 | 159 | Conical | Coupled |
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.
