The stainless steel sanitary pipe is a long strip of steel with a hollow section and no seams around it. The thicker the wall thickness of the product, the more economical and practical it is. The thinner the wall thickness, the higher the processing cost will be.
The process of the product determines its limited performance, and the precision of the seamless steel pipe is generally low. The wall thickness is not uniform, the brightness inside and outside the tube is low, the length of the fixed length is high, and there are pitting and black spots on the inside and outside, and the black spots are not easy to remove; its detection and shaping must be processed offline. Therefore it embodies its superiority in high pressure, high strength, mechanical structural materials.
Stainless steel sanitary pipes are mainly used in production equipment and assembly lines for beverages, alcohol, bioengineering, food, etc. People mainly require the surface finishment, passivation layer and oil repellency of stainless steel sanitary pipes:
1. Surface finishment: Polish the inner and outer surfaces of the stainless steel sanitary pipe to make the surface of the steel pipe smoother and brighter, which is what we often call the mirror surface. The main purpose is to prevent the fluid material in the tube from forming a wall in the pipe, which is prone to pollution and form a pipe blockage.
2. Passivation layer: After polishing, the steel pipe should be placed in a passivation tank for immersion, and the surface of the steel pipe is oxidized with an acid passivation solution to form a passivation layer to achieve the corrosion resistance of the steel pipe.
3. Degree of oil ban: After the passivation is completed, the oil is cleaned and the oil on the surface of the steel pipe is removed. After completion, it needs to be tested with a grease analyzer. It mainly prevents the oil of the pipe wall itself from contaminating the fluid material flowing inside the pipe.