发布时间:2025-02-01 19:37:11
hdpe双壁波纹管
公称内径 DN/ID 最小平均内径
dim、min 最小层压壁厚
emin 最小内层壁厚
e1.min 接合长度
Amin
225 220 1.7 1.4 55
300 294 2.0 1.7 64
400 392 2.5 2.3 74
500 490 3.0 3.0 85
600 588 3.5 3.5 96
700 689 4.0 4.0 102
800 785 4.5 4.5 118
1000 985 5.0 5.0 140
1200 1185 5.0 5.0 162
楼主可以上1688.cn上面看的,网站上有啊。
楼顶东边墙角下雨渗水自己可以动手修复吗东边也有人家住有简单实用的招吗
2025-02-01 19:37:11铅蓄电池是典型的可充电电池它的正负极板是惰性材料分别吸附着pbo2和pb电池总反应式为pbpbo24h
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