Japan, in addition to being a country symbolized by cutting-edge science, is also a country with high requirements for sophistication in the field of home life. Taking the daily drinking water field as an example, Japan began to use stainless steel pipes as urban water supply pipes in 1982. Today, the proportion of stainless steel water pipes used in Tokyo, Japan is as high as more than 95%.
Why does Japan use stainless steel pipes on a large scale in the field of drinking water transportation?
Before 1955, galvanized pipes were commonly used in tap water supply pipes in Tokyo, Japan. From 1955 to 1980, plastic pipes and steel-plastic composite pipes were widely used. Although the water quality problems and leakage problems of galvanized pipes have been partially solved, leakage in Tokyo’s water supply network is still very serious, with the leakage rate reaching an unacceptable 40%-45% in the 1970s.
The Tokyo Water Supply Bureau has conducted extensive experimental research on water leakage problems for more than 10 years. According to analysis, 60.2% of water leaks are caused by insufficient strength of water pipe materials and external forces, and 24.5% of water leaks are caused by unreasonable design of pipe joints. 8.0 % of water leakage is caused by unreasonable pipeline route design due to the high expansion rate of plastics.
To this end, the Japan Waterworks Association recommends improving water pipe materials and connection methods. Starting from May 1980, all water supply pipes with a diameter of less than 50 mm from the auxiliary water main line to the water meter will use stainless steel water pipes, pipe joints, elbows and faucets.
According to statistics from the Tokyo Water Supply Department, as the usage rate of stainless steel increased from 11% in 1982 to more than 90% in 2000, the number of water leaks correspondingly dropped from more than 50,000 per year in the late 1970s to 2-3 in 2000. , fundamentally solved the problem of leaking drinking water pipes for residents.
Today in Tokyo, Japan, stainless steel water pipes have been installed in all residential areas, which has greatly improved water quality and enhanced earthquake resistance. From the application of stainless steel water pipes in Japan, we can find that the advantages of stainless steel water pipes in terms of green environmental protection, resource conservation, and health and hygiene are unquestionable.
In our country, stainless steel pipes were initially mainly used in the military industry. After nearly 30 years of development, product technology has significantly improved, and has gradually entered the field of drinking water transportation, and has been vigorously promoted by the government. On May 15, 2017, the Ministry of Housing and Urban-Rural Development of China issued the “Direct Drinking Water Pipeline for Buildings and Residential Areas” System Technical Regulations”, which stipulates that pipes should be made of high-quality stainless steel pipes. Under this form, China has given birth to a group of representatives of state-owned enterprises and private enterprises with superior technological capabilities.
Post time: Mar-21-2024