发布时间:2025-01-17 15:47:19
确实是有两种的,这里不得不说下,国标和美标的问题了。DN100是指的公称直径,是为了管道工程设计时,方便和管件连接,所以通用的一个叫法就是DN,DN100对应的国标就是108;对应的美标就是114.最好你对一下你的管子是外径是多大的,管件就不易买错了。
9号台风马鞍或将正面袭击广东 25-26日广州深圳等迎明显风雨
2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19万利达电脑电视一体机怎么样啊 和台式的比 买哪种比较划算啊 各位哥哥姐姐给点建议啊
2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19 2025-01-17 15:47:19