More and More Countries Choose Stainless Steel Water Pipe Instead Of PVC or GI Pipe

Nowadays, more and more countries have used stainless steel water pipes one after another, and China is also vigorously promoting stainless steel water pipes, which have almost spread across the country.

So why did developed countries choose to use stainless steel water pipes? Let's take the examples of Japan and the United States to tell you the reasons.

The water supply pipeline in Tokyo, Japan has experienced the development process of galvanized pipe-plastic pipe (represented by rigid polyvinyl chloride)-composite steel pipe-stainless steel pipe.

Before 1955, galvanized pipes were commonly used. From 1955 to 1980, plastic pipes and composite steel pipes of different materials were widely used in water pipes in buildings and some outdoor water pipes.

But whether it is galvanized pipe or plastic pipe and various composite pipes, in the long-term use process, due to the poor corrosion resistance of these materials, they are susceptible to corrosion, or due to external forces (such as thermal expansion and contraction, construction damage, etc.) , or water leakage caused by unreasonable pipeline structure (limited by materials) is very common.

According to analysis, water leakage caused by pipe corrosion and external force accounted for 60%, water leakage caused by poor joint accounted for 24%, and structural reasons accounted for 8%. For this reason, the Tokyo Water Supply Bureau began to use a large number of stainless steel pipes and pipe joints for the reasons of water leakage.

At the same time, Japan also began to use stainless steel pipes in the early 1970s due to the deteriorating quality of drinking water in the pipe network, and then extended to buried water supply pipes.

Especially after the Great Hanshin Earthquake in 1995 and the mass poisoning of pathogenic coliform bacteria in 1996, people paid more attention to water quality, and stainless steel pipes and water storage equipment that can obtain good water quality and are durable are generally welcomed.

In this earthquake, stainless steel water tanks and pipes were not damaged by the earthquake due to their high strength and excellent impact resistance, and they also took on the task of supplying drinking water to people in the ruins.

The reason why the United States chooses stainless steel is entirely based on economic and health considerations. For example, the water plant in Massachusetts saves about US$50,000 by using stainless steel pipes compared with ductile iron, and the stainless steel pipes that have been used for 30 years are still bright. like New.

In some ancient cities in Europe, the main water supply pipes are asbestos cement pipes and cast iron pipes. The water loss due to leakage is as high as 40%. Since 1995, Italian cities have generally adopted a technology that does not need to dig trenches to replace the main water pipes. Stainless steel pipes. Experience shows that stainless steel pipes are corrosion-resistant, high-strength, resistant to ground subsidence and earthquakes, and have a service life of at least 70 years.

Based on the above cases, there are several key factors affecting the application of stainless steel water pipes in developed countries: pipe leakage, rusting of water pipes and economic safety.

China, which is developing rapidly, is also facing the problems of pipe leakage and rusting of water pipes. As early as the 1990s, plastic pipes began to land in China and became the water supply pipes for thousands of households.

However, with the passage of time, problems such as cracks and water leakage caused by aging and corrosion of plastic pipes began to emerge one after another, and many water safety accidents broke out.

Therefore, whether it is from the perspective of improving the quality of life and improving the health of drinking water, it is imperative to popularize stainless steel pipes in China.

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