The stainless steel pipe is safe and reliable, health and environmental protection, economical and applicable, the thin wall of the pipe and the successful development of the new reliable, simple and convenient connection method, so that it has more advantages that other pipes cannot be replaced, the application in the project will be more and more, the use will be more and more popular, and the prospect is promising.
With the implementation of reform and opening policy, the national economy is growing rapidly, and many urban housing, public buildings and tourist facilities are built. It brings forward new requirement for hot water supply and domestic water supply. Especially the water quality problem, people pay more and more attention to, and the requirements are constantly raised. Galvanized steel pipe is a commonly used pipe because of its corrosivity. Under the influence of relevant national policies, it will gradually withdraw from the stage of history. Plastic pipe, composite pipe and copper pipe have become the commonly used pipes of pipeline system. But in many cases, stainless steel pipe has more advantages, especially the thin wall thickness of only 0.6 ~ 1.2mm stainless steel pipe in high quality drinking water system, hot water system and the safety, health first water supply system, with safe and reliable, health and environmental protection, economical and applicable characteristics. It has been proved by domestic and foreign engineering practice that it is one of the new, energy-saving and environment-friendly pipes with the best comprehensive performance in the water supply system, and it is also a very competitive water supply pipe. It will certainly play an incomparable role in improving water quality and people’s living standards.
In the building water supply system, because galvanized steel pipe has ended a hundred years of brilliant history, a variety of new plastic pipes and composite pipes have been rapidly developed, but a variety of pipes are still in varying degrees of some deficiencies, far from fully adapt to the needs of water supply pipe system and the national requirements for drinking water and related water quality. Therefore, experts predict: building water pipe will eventually restore to the era of metal pipe. According to the application experience abroad, the thin-walled stainless steel pipe is identified as one of the best pipes with comprehensive performance.
(1) The time for popularization and application of thin-walled stainless steel tube in China is ripe
Thin-wall stainless steel pipe, domestic production and use in the late 1990s, is a budding new generation in the field of pipe, has been widely used in building water supply and direct drinking water pipelines.
Thin wall stainless steel pipe durable, has been recognized by the engineering community, and the relevant aspects are to reduce the wall thickness, reduce the price, to facilitate further promotion. Especially the small diameter stainless steel pipe, the price is not high, so the supporting connection method, the reliability of pipe fittings and the price are the main factors to determine its development. Domestic developers in Sichuan, Guangdong, Zhejiang, Jiangsu and other places have independently developed the connection technology and pipe fittings, is a very promising pipe. Ministry of Construction and relevant departments also attach great importance to this new type of pipe, according to China Technology Market Management Promotion Center, Guke City  No. 71 document, on the promotion and application of “high diameter wall ratio of high-precision stainless steel medium and high pressure water supply pipe and supporting pipe fittings and special technology” notice, Popularization and application of thin-walled stainless steel tube technology and products are of great significance to improve the modern building class and ensure water quality.
At the same time, the Ministry of Construction attaches great importance to the popularization and application of thin-wall stainless steel pipe. The industry standard “Thin Wall Stainless Steel Water Pipe” has been issued and implemented in 2001. Relevant pipeline engineering technical regulations and installation atlas have been issued by the Ministry of Construction and are being prepared by Tongji University. Sichuan, Guangdong, Zhejiang, Jiangsu and other places have professional manufacturers producing thin wall stainless steel pipe, the product has been mature, therefore, the time to popularize the application has arrived.
(2) The prospect of the domestic market is promising
① Large demand for building water supply pipeline
According to the “Ninth Five-Year Plan” of Construction Industry and 2010 Vision Target Outline, it is estimated that from 2001 to 2010, the annual demand for pipes is 500,000-600,000km, of which the demand for hot and cold water pipes in residential building areas is 400,000km. Some people think that the development of stainless steel water pipe, to improve the grade of modern urban architecture, great significance.
② Pipeline direct drinking water has developed rapidly
With the development of the national economy, the pipeline direct drinking water in the domestic Beijing, Shenzhen, Shanghai, Chongqing and other cities have developed rapidly, and the economically developed medium-sized cities are also actively planning to catch up. In direct drinking water, stainless steel piping is no doubt second to none. Domestic high-grade hotels, public places have been configured or in the configuration of direct drinking water pipeline.
(3) Domestic substitution of imports has a bright future
In order to promote stainless steel tube, China from the 1990s to reduce the wall thickness, reduce the cost, solve the “high diameter wall ratio of high precision” thin-wall stainless steel tube technical problems, so that stainless steel tube has been popularized and applied, development is rapid. A pipeline can be fully promoted and applied, without localization. Some domestic manufacturers already have the ability to produce and further develop thin-wall stainless steel pipes and fittings.
(3) The connection of stainless steel pipe is various
Stainless steel pipe connection modes are various, the common types of pipe fittings are compression type, compression type, loose type, push type, push thread type, socket welding type, loose type flange connection, welding type and welding and traditional connection combination of derived series connection. These connection modes, according to their different principles, its scope of application is also different, but most of them are convenient to install, firm and reliable. The sealing ring or gasket material used for connection is mostly made of silicone rubber, nitrile rubber and EPthree rubber which meet the requirements of national standards, so as to avoid the worries of users.
Post time: Mar-07-2023