API Drill Bit Adaptor Sub Crossover Subs High Effective

API Drill Bit Adaptor Sub, Crossover Subs Wholesales Made in China

The adapter subs are used as connectors or couplings to connect drill rods,core barrels,casing,water swivel, hoisting
plug, fishing tools etc.that have different sizes or types of threads.

Adaptor subs are made of high quality alloy steel. Connections can be made as per clients' requests.

Detailed photos:

Situated in Wuxi City which is renowned as geological drilling equipment manufacturing cernter of China,Best Drilling has been specializing in geological equipment since 2008. and now it has become one of the leading manufacturers in this industry.

Best Drilling people sincerely look forward to working with you in the near future.

Best Drilling Equipment (Wuxi) Co., Ltd specializes in manufacturing premium geological exploration equipment and drilling tools with cost-optimized efficiency.
Our /ISO9001:2008 accredited facility in Jiangsu Province has been recognized with multiple provincial honors including Jiangsu High-quality Product and Contract Compliance Enterprise.

Core Competencies:

1. OEM/ODM Capability: Comprehensive range of drilling tools including drilling rods, wireline systems, diamond-impregnated core bits, and reaming shells. 

2. Advanced Manufacturing: Automated production lines with CNC machining centers and specialized sintering equipment

3. Technical Expertise: 20+ years R&D experience in full-hydraulic core drilling rigs and mud pump systems

4. Cost Efficiency: Factory-direct pricing through vertical integration from raw materials to finished products

Our product portfolio covers:

• Wireline core barrel systems (B/N/H/P/WL series)

• Drill rod assemblies & overshot tools

• Customizable diamond core bits & reaming shells

• Complete core drilling rig

Through continuous innovation and strict quality control, we help global partners achieve 18-25% drilling cost reduction per meter while maintaining operational reliability. Our expanding global network currently serves mining and exploration projects across 23 countries. We maintain ISO-accredited quality management from material sourcing to final inspection, ensuring every product meets international efficiency standards. Our engineering team provides customized solutions for specific geological conditions and operational requirements. To discuss how our drilling technologies can enhance your project efficiency, kindly reach out to our export team for detailed technical specifications and competitive quotations. We welcome both existing and new clients to explore partnership opportunities with us.