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许多年来,住宅用冷热水管都是钢、铁镀锌管,而现在塑料金属管,铜管则以其经济实用、性能好等优势逐渐进入了人们的新生活。 目前,我国95％的住宅给水都采用钢、铁镀锌管。因其内壁易生锈、结垢,滋生细菌、微生物等有害杂质,使自来水在管道输送途中造成“二次污染”。另外,现在居民家中普遍使用热水器,自来
For many years, residential hot and cold water pipes have been made of steel and iron galvanized pipes. Today, plastic metal pipes and copper pipes have gradually entered people’s lives with their advantages of economy, practicality and good performance. At present, 95% of residential water supply in China uses steel and iron galvanized pipes. Because of the rust and scaling on its inner wall, harmful impurities such as bacteria and microorganisms are generated, causing tap water to cause “secondary pollution” during pipeline transportation. In addition, water heaters are now widely used in residential homes.