保溫熱水管的(de)(de)隱蔽工程是(shi)(shi)一個非常(chang)重要的(de)(de)問(wen)題(ti)，如果水管(guan)(guan)(guan)(guan)滲漏(lou)和(he)爆裂將帶來(lai)難(nan)以(yi)彌補(bu)的(de)(de)后(hou)果。過去，用(yong)(yong)(yong)于供水的(de)(de)管(guan)(guan)(guan)(guan)道(dao)主(zhu)要是(shi)(shi)鑄(zhu)鐵(tie)管(guan)(guan)(guan)(guan)。室(shi)外(wai)主(zhu)要用(yong)(yong)(yong)的(de)(de)是(shi)(shi)砂(sha)(sha)模鑄(zhu)鐵(tie)管(guan)(guan)(guan)(guan)，室(shi)內用(yong)(yong)(yong)的(de)(de)是(shi)(shi)鍍(du)(du)鋅鑄(zhu)鐵(tie)保溫熱(re)水管(guan)(guan)(guan)(guan)。但(dan)是(shi)(shi)由于使用(yong)(yong)(yong)幾年之后(hou)容易產生大量銹垢，滋生細菌，嚴重危害人體的(de)(de)健康。國(guo)家(jia)已規(gui)(gui)定在2000年6月1日起淘汰(tai)砂(sha)(sha)模鑄(zhu)造管(guan)(guan)(guan)(guan)件(jian)(jian)和(he)冷鍍(du)(du)鋅鑄(zhu)鐵(tie)管(guan)(guan)(guan)(guan)，逐(zhu)步(bu)限(xian)制熱(re)鍍(du)(du)鑄(zhu)鐵(tie)管(guan)(guan)(guan)(guan)的(de)(de)使用(yong)(yong)(yong)，推廣使用(yong)(yong)(yong)保溫熱(re)水管(guan)(guan)(guan)(guan)等新型管(guan)(guan)(guan)(guan)材。國(guo)家(jia)還規(gui)(gui)定各(ge)種涉及飲用(yong)(yong)(yong)水管(guan)(guan)(guan)(guan)道(dao)的(de)(de)管(guan)(guan)(guan)(guan)子(zi)和(he)配件(jian)(jian)，須有衛生部門的(de)(de)批(pi)件(jian)(jian)，方可銷售。