Cross Over Subs
Engineered for Maximum Strength and Durability
Overview
PD Engineering manufactures and supplies top-tier Cross Over Subs. Precision engineered cross over subs designed to seamlessly connect different sizes or types of drill strings with leak-proof integrity.
Our premium cross over subss are manufactured using the most advanced friction welding technology in the world. The tool joint adapters are permanently forged to the tube, resulting in a seamless bond that guarantees superior reliability, prevents downhole failures, and withstands extreme torque in harsh global drilling environments.
By utilizing high-grade steel and strict quality control measures, we ensure that every drill rod delivered offers unmatched performance.
Why Choose Our cross over subss?
Engineered for longevity and maximum drilling efficiency.
Friction Welded Joints
Tool joints are friction welded to the drill tube, creating a bond stronger than the parent material for maximum torque resistance.
Uniform Normalization
Each friction welded drill rod is uniformly normalized to relieve stress and ensure consistent mechanical properties throughout.
Extended Lifespan
Superior tensile strength and wear resistance give our cross over subss a significantly longer operational life, reducing replacement costs.
Technical Specifications
Standard sizes manufactured for DTH Waterwell and Mining applications.
| Pipe OD (Inches) | Available Lengths (Feet) | Connection Type |
|---|---|---|
| 5 1/2 | 20', 15', 10', 5' | NC38 (3 1/2 IF) |
| 5 | 20', 15', 10', 5' | NC38 (3 1/2 IF) |
| 4 1/2 | 20', 15', 10', 5' | NC31 (2 7/8 IF) |
| 3 1/2 | 20', 15', 10', 5' | NC26 (2 3/8 IF) |
| 2 7/8 | 20', 15', 10', 5' | NC26 (2 3/8 IF) |
| 2 3/8 | 20', 15', 10', 5' | NC26 (2 3/8 IF) |
* Custom lengths and specifications are available upon request.
100% Rig Compatibility
Our cross over subss are compatible with all major rig manufacturers operating globally, including:
Frequently Asked Questions About Cross Over Subs
Common queries regarding our manufacturing and specifications.
A friction welded cross over subs uses a solid-state welding process that generates heat through mechanical friction to join the tool joint to the tube. This creates a seamless, forged bond that is incredibly strong and highly resistant to torsional stress during drilling.
We manufacture cross over subss with industry-standard API connections, primarily including NC38 (3 1/2 IF), NC31 (2 7/8 IF), and NC26 (2 3/8 IF), ensuring compatibility with standard drilling rigs worldwide.
Yes. While our standard lengths are 20', 15', 10', and 5', we frequently manufacture customized length pup joints and drill rods to meet the specific requirements of complex Oil & Gas and HDD applications.
Absolutely. Our cross over subss are heavily utilized in DTH (Down-The-Hole) water well drilling, as well as mining and geothermal applications, thanks to their robust design and compatibility with rigs like Atlas Copco and Sandvik.
Ready to Order?
Contact our engineering team to get a quote or discuss custom requirements.