Special thread processing-HYDRIL 500 series wedge special thread

The picture shows the wedge-shaped threads used in 501, 521, 533, and 563 types of special buckles of Hydril's 500 series, which have strong resistance to bending and slippage. They are mostly used in horizontal wells and other oil and gas wells, and can also be used to produce expansion pipes.

This kind of thread requires high processing and surface treatment technology;

It has good air sealing performance under the action of compound load;

The efficiency of anti-compression load exceeds 100%;

Strong resistance to bending, there is basically no relative displacement between the internal and external threads under bending conditions;

Anti-corrosion materials can be filled between the internal and external thread shoulders of the joint;

It has the ability to resist over-torque and can withstand 3-5 times the over-torque load.