Product highlights:
- Engineered for Critical Transitions: Seamlessly connect mismatched drill stem components (drill pipe, heavy weight drill pipe, downhole tools, drill bits).
- Premium Material:Manufactured from AISI 4145H modified quenched and tempered steel for exceptional strength, fatigue resistance, and durability in harsh downhole environments.
- API-Compliant Reliability: Designed and manufactured to strict API specifications and bearing the API monogram for guaranteed performance and safety.
- Dual Functionality: Serves as a transition sub between connection sizes or as a disposable component to protect expensive drill stem members from premature wear.
- Versatility: Includes Straight OD Sub designs for connecting components with similar outside diameters.
Overview of Cross over sub：Cross over subs are essential drilling tools within the downhole tools category, acting as critical adapters in the drill string.
They are engineered to "crossover" between different thread forms, sizes, or tool joint configurations. Specifically, the Straight OD
Sub variant connects drill stem members (e.g., drill bit, downhole tools, heavy weight drill pipe, and drill pipe) sharing a similar
outside diameter while accommodating differing thread types.
These components are made from AISI 4145H modified quenched and tempered material, ensuring superior resistance to shock
loads, torsion, and abrasive downhole conditions. All subs adhere to rigorous API specifications and carry the API monogram
, validating their quality and interoperability.
Advantages of Cross over sub：
✅ Extended Tool Life & Cost Savings:
- Functions as a disposable component, absorbing wear at connection points to extend the connection life of high-value
drill stem members (e.g., premium drill pipe or downhole tools).
✅Operational Flexibility:
- Enables rapid adaptation of the drill string by crossing over between diverse connection sizes or thread types, minimizing
downtime during tool changes.
✅ Robust Downhole Performance:
- Forged from high-grade AISI 4145H modified steel for optimal yield strength, toughness, and resistance to stress cracking
under high pressure/torque.
✅ Standardized Reliability:
- API-compliant design ensures compatibility across drilling systems and reduces failure risks in critical applications.
✅ Optimized Drill String Design:
- Straight OD Subs maintain uniform outer diameter profiles, reducing turbulence and improving hole cleaning efficiency while
connecting same-OD components.
✅ Reduced Inventory Costs:
- Minimizes the need for specialized adapters by providing versatile transition solutions across common drill stem sizes and
connections.
Why choose our Cross over sub?
Professional oil tools manufacturer, strictly following API standards.
Cross over sub adopts precision machining to ensure high-precision matching.
Customized service to meet the needs of different drilling conditions.
Global oil field application verification, reliability and durability are highly recognized.
