发布时间:2025-02-05 21:52:44
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)....
阳台的墙面掉了一大块用什么材料补比较方便除用水泥和沙修补之处
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