发布时间:2025-02-05 22:10:05
伟星PE管材
按原料分为PE80和PEPE100,PN表示水管公称压力,SDR表示外径与壁厚之比。。
比如PE 80 PN0,.4 SDR21 D110*18.5(110表示外径,18.5表示壁厚)....
我家楼房有个露台装修之前把露台封起来了打算把露台下面的围墙粘瓷砖可是粘瓷砖的时候发现露台不一
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