发布时间:2025-01-20 11:58:57
HDPE双壁波纹管采用橡胶圈承插连接。HDPE缠绕B型结构壁管,可以采用橡胶圈承插,但一般都采用热熔承插连接,比橡胶圈更牢靠。考虑到如果沟槽排水困难,用橡胶圈承插。
我家是套房原来烟囱那里预留了一个洞我没发现后来吊顶盖过去了现在叫一个师傅来装抽油烟机他重
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