Cross Over Sub used joining two different size tooling to each other. Made up in 4145H Materila with High Yield strengh and impact strength suitable for Oil and gas and HDD drilling sectors. Cross over/ adaptor should have exact same threading as the connecting member to insure that we have APIspec 7-1 Licence which give us the capability and compitaance to manufacture and inspect the threadings. A crossover sub, also known as a crossover coupling, is a type of drilling equipment used in the oil and gas industry. It is a short, threaded pipe fitting that connects two pipes with different sizes or types of threads.

The crossover sub is designed to facilitate the transition from one type of threaded connection to another, allowing for the connection of different pieces of equipment with varying thread types or sizes. It is typically used in drilling operations where different types of drill pipes or drilling equipment are used and must be connected.

Crossover subs come in various sizes, lengths, and thread configurations, depending on the specific requirements of the drilling operation. They are made from high-strength materials such as alloy steel to withstand the high stresses and pressures of drilling operations.