发布时间:2025-02-05 16:49:39
一般法兰根据管道的材质、直径、温度和压力来选取的,压力或温度改变,法兰的外形尺寸就随之变化。
比如DN150的管道,你需要知道管道的材质、运行的压力和温度,根据这三点参数就可以选择法兰了。和法兰相配套的螺栓和垫片也和这几点参数有关。
北京地铁七号线施工常于夜间高调发出强力噪音有什么办法能在嗓音中入眠
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