Sanitary stainless steel pipe overview

The main difference between sanitary stainless steel pipes and ordinary stainless steel pipes is that the inner surface is polished, which will reduce resistance and increase fluidity when conveying fluids, making the fluids stainless and doped with debris on the pipe wall peeled off by the impact of fluids , It also makes the inner wall of the steel pipe less prone to fouling, ensuring hygienic safety. In addition, it has the characteristics of high precision, good surface finish, uniform pipe wall, corrosion resistance, temperature resistance, and so on.

Sanitary stainless steel pipes are often used in pipeline laying in pharmaceutical factories, food factories, beverage factories, breweries and other places with high safety requirements.

At the same time, some corresponding sanitary equipment also need to use sanitary stainless steel pipes, such as water purification equipment, water circulation system, fermentation tank, etc. With the improvement of people’s quality of life, water purification equipment has gradually entered people’s daily life. In order to avoid secondary pollution of water quality, sanitary stainless steel pipes are also widely used as the shell of water purifiers.

Stainless steel sanitary pipe product features (high, fine, specialized)
High: high precision, high finish, outer diameter tolerance ±0.05, wall thickness tolerance can also reach ±0.05mm, sometimes up to ±0.03mm, inner hole size tolerance is strictly controlled, can reach ±0.03 less than 0.02-0.05mm, inner and outer surface smoothness Ra 0.8μm After polishing, the internal and external surface finish of the tube can reach Ra 0.2—0.4μm (such as mirror surface)

If the customer has an outer surface finish requirement, it can even reach below 0.1 or even 8K surface finish: precise size, precise product size, and precision are at a very high level.

Generally, as long as it is not thick-walled, large-diameter stainless steel sanitary pipes. The outer diameter, wall thickness, and inner hole tolerances can basically be controlled within the range of ±0.05mm, of course, sometimes even higher.
304 sanitary grade stainless steel pipe GB/T14976-2012 standard:

First, the thicker the wall thickness of the stainless steel sanitary pipe, the more economical and practical it is, and the thinner the wall thickness, its processing cost will increase significantly;

Secondly, the process of stainless steel sanitary pipe determines its limited performance. Generally, the precision of seamless steel pipe is low: uneven wall thickness, low brightness inside and outside the pipe, high cost of sizing, and there are pits on the inside and outside, and black spots are not easy to remove.

Post time: Jan-31-2023