Casing joint is a necessary part to connect two sleeves. The manufacturing method is the same as that of seamless pipe. Special steels such as J55 and n80Q are used in China. The end of the steel pipe has internal threads, which are used to connect the upper pipe and the lower pipe. In order to ensure the sealing of the joint, the thread accuracy has more stringent requirements.


First, use
Used to connect upper and lower pipes.


Types
Domestic casing can be divided into non-thicker casing joint and thicker casing at both ends.


Third, the processing process
Automobile End Face - Automobile Outer Ring - Boring - Automobile Thread - Inspection - Phosphating