Pickling pipes: Pickling passivation is to form a dense salt on the metal surface to isolate the oxygen in the air during the future use of the metal. Then this acid will be a special acid.
Bright annealing pipe: It is part of the annealing of stainless steel production. It is accompanied by inert gas annealing to make the annealed surface of stainless steel not easy to oxidize, so that the surface of the finished product has a certain brightness, which refers to the outer surface;
Mechanical polishing
It is a polishing process, regardless of the inside and outside of the pipe. Mechanical polishing can be polished inside or outside according to customer requirements.
Electrolytic polishing is also a polishing process. It uses electrolyte to adsorb anions and cations to the surface to achieve a polishing effect. It is generally used for external surface polishing.
The polishing grade is the requirement and index of the polishing brightness, which has nothing to do with the inside and outside. For example, it is required to polish to 180 mesh. The larger the mesh number, the brighter it is, just like the screen resolution of a computer is a concept.
Sanitary pipe: high-precision sanitary stainless steel pipe, bright annealed and then mechanically polished, with a finish of Ra ≤ 0.4μm.
Stainless Steel Seamless Tubes
