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一般家装水管是多大规格的？

一般家装水管是多大规格的？

浏览：34次 | 提问时间： 08-06 08:05

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6个答案

怪我不争气 08-06 08:06

用冷水25（管径，mm），热水20。这次发现，很多工地不管冷水还是热水管，都是用的20管，而且有很多水电材料店也没有25管卖，估计是市场养成的习惯，进了25管的货，也不一定卖得出去，慢慢地就不进这种货了。为什么冷水管用25，热水管用20呢？先说冷水，从墙面出来的内丝弯头都是20的，也就是说，各种龙头的出水口是20的，用25的管径目的是在多点同时分流用水时，水流不变小。用20管，明显在多点用水时，出水会比25小的。热水会什么要考虑20的呢，这是从能源节约角度来考虑的，因为，两个卫生间同时洗澡的机会本来不大，加上，热水本来是中合冷水来调温的，对热水的用水量不如冷水这么大，比如，洗衣机，拖布池，或洗衣槽等。其次是，25管大于20管，也就是说，从热水器出来热水后，当你使用完热水，管中存放的热水就不能利用起来了（25管肯定比20管多不少），只能等着慢慢变凉，每天有多少这种热能的浪费，这一辈子加起来不得了。