发布时间:2025-02-01 14:44:26
管件接头3/4指的是管件接头的为六分(6英分),DN(管径)为20mm,外径为26.8mm。补充: 1英寸=25.4毫米 =8英分,1/2是四分(4英分) DN管径15mm,3/4是六分(6英分)DN20mm。
请问高手们我家在小区五楼没电梯的现在要装修了需要往楼上运水泥沙子和地板砖工钱怎么算呢
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