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Fatigue Properties And Benefits Of Thin-walled Stainless Steel Water Pipes

Mar 03, 2021

With the implementation of China's reform and opening policy, the national economy has achieved rapid growth. Many township houses, public buildings and tourist equipment have been repaired, and new requirements have been put forward for hot water supply and domestic water. People are paying more and more attention to water quality issues, and the requirements for water quality are constantly increasing. Due to its corrosiveness, under the influence of relevant national policies, galvanized steel pipes will gradually withdraw from the stage of history. Plastic pipes, composite pipes and copper pipes have become commonly used pipe materials in piping systems. However, in many cases, stainless steel pipes are more advantageous, especially thin-walled stainless steel water pipes with a wall thickness of only 0.6 to 1.2 mm. They are used in high-quality drinking water systems, hot water systems, and water supply systems that put safety and cleanliness first. They are safe, reliable, clean,

environmentally friendly, and economical.

The stainless steel water pipe has a long service life. The service life of stainless steel water pipes can reach 100 years, at least 70 years, which is equivalent to the service life of buildings. Fatigue property is actually a kind of ability to resist external influences. What is the fatigue performance of stainless steel water pipes?

Thin-walled stainless steel water pipe: The processing of pipe fittings will affect the fatigue performance of metal parts. The processes that affect the fatigue properties of metals include welding, grinding, forming, etc. These processes will generate tensile stress on the pipe fittings, thereby accelerating the occurrence of metal fatigue failure, reducing the service life of stainless steel, and requiring a solution (heat treatment) process.

After the pipe fittings are formed and welded, the stress is relieved at about 1050°C to restore the stress and intergranular changes of the stainless steel pipe during the production process, and improve its resistance to stress and intergranular corrosion.

Reduce the hardness of stainless steel below 220HV, improve fatigue performance, increase the plasticity and toughness of stainless steel, and improve the safety performance of pipe fittings when installed under pressure. It can also restore the natural brightness of the stainless steel surface, making it more beautiful and natural.

Advantages of thin-walled stainless steel water pipes:

1. Hygiene: long-term use does not scale and fully meets the drinking water sanitation standards.

2. Anti-corrosion: All pipelines are solid solution treated, and the appearance is pickled and passivated, which is durable.

3. High strength: The general strength is twice that of galvanized pipes and three times that of copper pipes.

4. Light weight: 1/3 of the weight of galvanized pipe, especially suitable for high-rise building pipes.

5. Low thermal conductivity: low thermal conductivity, 1/25 of copper pipe, 1/4 of carbon steel pipe, slow thermal expansion and cold contraction.

6. Environmental protection: no pollutants at the construction site and no pollution to the environment.

7. Life: The service life is more than 70 years, synchronized with the life of the building, and the "life" is free of replacement.

Henghexin pipe industry engineering practice has proved that thin-walled stainless steel water pipes are one of the best, new, energy-saving and environmentally-friendly pipes in the water supply system. This is also a very competitive water supply pipeline, which will definitely help improve water quality and progress. The level of the day promotes unparalleled results. When choosing stainless steel in a corrosive environment, in addition to understanding the detailed operating conditions of stainless steel, the main factors that need to be considered are: stainless steel's corrosion resistance, strength, resistance and physical functions, processing, forming functions, resources, quotations, etc.