The upper part of the casing circulation joint can be connected to an oil union or drill pipe, usually a 2-inch oil union outer buckle or drill pipe inner buckle, and the lower part is an API casing thread outer buckle used to connect the casing coupling.

Functional features:

1. The casing circulation head is manufactured using alloy pipe processing, and the drill pipe circulation head is integrally forged.

2. It can be used in conjunction with cement heads to achieve rapid disassembly and installation.