Stainless steel thick wall pipe is a kind of steel pipe with hollow inside, a certain cross-section and no joints around. Usually, the ratio of the outer diameter of the steel pipe to the wall thickness of the steel pipe is less than 20, which is called stainless steel thick wall pipe. So do you know the manufacturing technology of stainless steel thick wall pipe?
The manufacturing process of thick wall stainless steel pipe has two kinds of hot rolling and cold rolling, and the cold rolling process is more complicated than the hot rolling process.

Cold rolling means that the pipe is first rolled by three rolls, and then pressed to establish the diameter, after treatment, and then check whether there is a crack on the surface of the pipe, the whole steel pipe must be cut, the tube blank is long, and then after annealing and pickling. After the inspection, if the stainless steel thick wall tube will foam, it means that it is unqualified and should be re-produced.

Hot rolling is the heat treatment of the steel pipe, the number of such steel pipe detection should usually be manually inspected, because in the inspection process should be oiled hot rolled steel pipe, and then after many cold drawing and perforation test, if the hole distance is too large should be re-corrected, confirm the error can be formally labeled.

The above is about the stainless steel thick wall pipe manufacturing technology introduction.