The stainless steel joint can cut the pipe on a special machine tool according to the required length, and can also be manually sawed. The perpendicularity of the cut surface and the center line of the pipe shall not be greater than half of the outer diameter tolerance of the pipe. Remove the inner and outer burrs of the pipe end, metal chips and dirt, and remove the pipe. Anti-rust oil and dirt on each part of the joint. The working principle of the stainless steel joint is to insert the steel pipe into the ferrule, lock it with the ferrule nut, interfere with the ferrule, cut into the pipe and seal it, and it does not need welding when connecting with the steel pipe, which is conducive to fire prevention, explosion-proof and high-altitude operations, and can solve the problem. Disadvantages of careless welding.