Stainless steel seamless pipe is safe, reliable, hygienic, environmentally friendly, economical, and applicable, the thin wall of the pipe and the successful development of a new reliable, simple, and convenient connection method make it more irreplaceable advantages of other pipe materials, and its application in engineering will become more and more The more it is used, the more popular it will be, and the prospect is promising. With the implementation of my country’s reform and opening policy, the national economy has achieved rapid growth, and a large number of urban housing, public buildings, and tourist facilities have been built, which puts forward new requirements for hot water supply and domestic water supply. Especially water problems, people more and more valued, pleas also driving forward. Galvanized steel pipe, a commonly used pipe material, will gradually withdraw from the historical stage under the influence of relevant national policies due to its easy corrosion. Plastic pipes, composite pipes, and copper pipes have become common pipe materials for piping systems. But in many cases, stainless steel seamless pipes are more advantageous, especially thin-walled stainless steel seamless pipes with a wall thickness of only 0.6-1.2mm are used in high-quality drinking water systems, hot water systems, and places where safety and hygiene are the priority. The water supply system has the characteristics of safety, reliability, sanitation and environmental protection, economy, and applicability. It has been proved by engineering practice at home and abroad that it is one of the new, energy-saving, and environment-friendly pipes with the best comprehensive performance in the water supply system. comparable effect. In the building water supply pipe system, since the glorious history of galvanized steel pipes has ended for a hundred years, various new plastic pipes and composite pipes have been developed rapidly. The needs of the system and the country’s requirements for drinking water and related water quality. Therefore, relevant experts predict that building water supply pipes will eventually return to the era of metal pipes. According to foreign application experience, the thin-walled stainless steel seamless pipe is considered to be one of the pipes with the best comprehensive performance in metal pipes.
(1) The timing for the popularization and application of domestic thin-walled stainless steel seamless pipes is ripe. Thin-walled stainless steel seamless pipes began to be produced and used in China at the end of the 1990s. and direct drinking water pipelines. Thin-wall stainless steel seamless pipes are durable and have been recognized by the engineering community, and relevant parties are starting to reduce wall thickness and lower prices to facilitate further promotion. Especially the small diameter stainless steel seamless pipe, the price is not high, so the supporting connection method, the reliability of the pipe fittings, and the price are the main factors that determine its development. Domestic developers in Sichuan, Guangdong, Zhejiang, Jiangsu, and other places have independently developed connection technology and pipe fittings, which are very promising pipes. The Ministry of Construction and relevant departments also attach great importance to this new type of pipe. According to the China Technology Market Management Promotion Center, Guokeshizi [2001] No. 71 document, on the promotion and application of “high-diameter-wall-ratio high-precision stainless steel medium and high-pressure water supply pipes and supporting According to the notice of “Pipe Fittings and Special Technology”, the promotion and application of thin-walled stainless steel seamless pipe technology and products are of great significance to improving the grade of modern buildings in my country and improving and ensuring the quality of water supply. At the same time, the Ministry of Construction attaches great importance to the promotion and application of thin-walled stainless steel seamless pipes. The industry standard of “Thin-walled Stainless Steel Water Pipe” was released and implemented in 2001. The relevant pipeline engineering technical regulations and installation atlas have been issued by the Ministry of Construction, and Tongji University is responsible for compiling them. At present, Sichuan, Guangdong, Zhejiang, Jiangsu, and other places have professional manufacturers producing thin-walled stainless steel seamless pipes, and the products have matured, so the time for popularization and application has come.
(2) The prospect of the domestic market is promising
①The demand for building water supply pipes is large. According to the “Ninth Five-Year Plan for Construction Industry and the 2010 Long-term Goal Outline”, the annual demand for pipes is 500,000 to 600,000 km from 2001 to 2010, of which the demand for hot and cold water pipes in residential building areas The volume is 400,000 km. Some people think that the development of stainless steel water pipes is of great significance for improving the grade of urban modern buildings.
②Drinking water through pipes develops rapidly With the development of the national economy, drinking water through pipes develops rapidly in domestic cities such as Beijing, Shenzhen, Shanghai, and Chongqing, and medium-sized cities with developed economies are also actively planning to catch up. In direct drinking water, the stainless steel seamless pipe system is undoubtedly second to none. At present, the top-grade hotels and public places in China have been equipped or are being equipped with direct drinking water pipelines.
③ Domestic substitution of imports has a bright future. To promote stainless steel seamless pipes, my country has started to reduce wall thickness and cost since the 1990s to solve the technical problem of thin-walled stainless steel seamless pipes with “high diameter-to-wall ratio and high precision”. The promotion and application of stainless steel seamless pipes have developed rapidly. Localization is indispensable for a pipeline to be fully popularized and applied. At present, some domestic manufacturers can produce and further develop thin-walled stainless steel seamless pipes and fittings.
(3) There are various connection methods for stainless steel seamless pipes. There are various connection methods for stainless steel seamless pipes. Type flange connection, welding type, and a derivative series of connection methods that combine welding and traditional connections. These connection methods have different scopes of application depending on their principles, but most of them are easy to install, firm, and reliable. Most of the sealing rings or gaskets used in the connection are made of silicone rubber, nitrile rubber, and EPDM rubber that meet the requirements of national standards, which relieves users from worries.
Post time: Jun-19-2023