发布时间:2025-02-05 16:52:54
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。
您好我在网上看到您回答过彩色沥青路面的一些问题请问彩色路面会留下车辆轮胎的痕迹吗
2025-02-05 16:52:54 2025-02-05 16:52:54 2025-02-05 16:52:54 2025-02-05 16:52:54 2025-02-05 16:52:54 2025-02-05 16:52:54结婚几年刚买了房子 房产证是我和老公的名字父母要求睡主卧 其实也算不上是主卧 就是哪间房
2025-02-05 16:52:54 2025-02-05 16:52:54 2025-02-05 16:52:54 2025-02-05 16:52:54 2025-02-05 16:52:54 2025-02-05 16:52:54 2025-02-05 16:52:54 2025-02-05 16:52:54 2025-02-05 16:52:54 2025-02-05 16:52:54 2025-02-05 16:52:54 2025-02-05 16:52:54 2025-02-05 16:52:54 2025-02-05 16:52:54 2025-02-05 16:52:54 2025-02-05 16:52:54 2025-02-05 16:52:54 2025-02-05 16:52:54 2025-02-05 16:52:54 2025-02-05 16:52:54 2025-02-05 16:52:54 2025-02-05 16:52:54