Flanges are also the standard connection for industrial butterfly type valves.
对于工业蝶阀，法兰还是标准连接方式。
The structure, principle and application of plunger-type valves at gas station are introduced.
介绍了柱塞阀的结构、工作原理及其在煤气站的应用。
The structure, principle and application of plunger-type valves at gas station are introduced.
介绍了柱塞阀的结构、工作原理及其在煤气站的应用。
应用推荐