发布时间:2025-02-05 16:49:07
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。
我想问下大家哈办酒席1方房子装修家电家具钻戒都是男方出到时男方要给女方彩礼吗
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