It was learned at the “Healthy Drinking Water, Faucet Control-Stainless Steel Faucet Development Trend Seminar and China’s Infant Drinking Water Improvement Public Welfare Program” held on June 20 that the traditional faucet uses alloys during casting, which hides the risk of excessive lead . Experts suggest that faucets that do not contain lead should be used, such as stainless steel faucets.
So far, the faucet industry has experienced three stages: cast iron faucet, copper faucet, and copper electroplated faucet, but it has never found a way to reduce the lead content.
Zhao Gang, director of the plumbing and sanitary inspection department of the Beijing Building Materials Inspection Center, believes that the main cause of lead precipitation is that the mainstream ceramic chip faucets in the market must be cast with copper alloys due to process restrictions.
According to reports, even if it is a copper alloy of good quality, as long as the lead element is in contact with the air, the surface will quickly oxidize, forming a protective film. Because water can peel off the protective film of lead, lead will be precipitated and immersed in the water when the faucet comes out.
If the faucet is used for a long time, green patina will appear on the inner wall, and harmful substances such as lead in the faucet may be released into the water.
In recent years, lead injury has gradually become an invisible killer that endangers the health of infants and young children.
Since 2005, the U.S. Environmental Protection Agency (EPA) has conducted a series of investigations and studies to provide free water lead content testing for 20,000 households in New York. The results show that 14% to 20% of lead exposure comes from drinking water. On April 3, 2011, the China Indoor Environmental Monitoring Committee announced the results of the survey on lead pollution in the indoor environment, pointing out that 80% of lead pollution is related to children's living environment, indoor environment and drinking water. On June 28, 2013, a test report issued by the Swiss SGS International Authoritative Testing Agency stated that among the five faucet samples sampled in four major cities in China, Beijing, Shanghai, Jinan, and Guangzhou, four samples had excessive lead precipitation.
In response to this situation, the domestic leader in lead-free faucets, Nanhai Minmetals Group, is the first to use 304 stainless steel to produce faucets, which not only has no heavy metal precipitation, but also meets the requirements of the upcoming 'Drinking Water Hygiene Standard'.
It is reported that 304 stainless steel has excellent rust resistance and good corrosion resistance, and is the material of choice for food-grade products. As early as 1999, the Tokyo Water Supply Bureau of Japan used stainless steel bellows as the standard material for underground water pipes. Many high-end sanitary ware brands in the world have also begun to use stainless steel to make faucets, but they are faced with the difficulties of mass production and high costs.
Nanhai Minmetals Group has many years of professional experience in stainless steel manufacturing. After 4 years of concentrated research and technical research, Nanhai Minmetals has built the industry's most advanced and fully automated faucet production line. In the polishing process, Nanhainuo adopts fully automatic robot equipment imported from ABB of Switzerland, which not only improves the polishing accuracy of the product, but also greatly improves the production efficiency, and also avoids the pollution of electroplating to the environment.
At present, the lead-free stainless steel faucet of Nanhai Minmetals has passed the inspections of the 'National Building Materials Industry, Building Hardware and Plumbing Products Quality Supervision, Inspection and Testing Center' and 'China Center for Disease Control and PreventionIndustry famous brand product awards and other awards, and passed relevant certifications in the United States, Canada, Australia, France and other countries.
At this event, Nanhai Minmetals Group also launched the 'China Infant Drinking Water Improvement Plan' public welfare activity, and plans to donate stainless steel faucets to 10,000 kindergartens across the country in phases and batches within the next three years. This public welfare activity will unite the power of the government, society, media and enterprises to popularize the basic knowledge of the harm of lead to the human body and lead protection, and arouse the public's attention to lead damage and the health and safety of drinking water for infants and young children, so as to improve the status quo of drinking water in China. .
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