Non-rising-inside screw stems are used in bronze and iron gate valves.
暗杆-内螺纹结构用于青铜和铸铁闸阀。
Stem structure 1) stem - inside screw bronze multi-turn valves for the most common and preferred structure.
阀杆结构1) 明杆-内螺纹结构对于青铜多回转阀门来说是最通用、首选的结构形式。
This paper introduces the structure, the principle and the operation of a device measuring inside screw developed by the authors.
介绍自行开发的内螺纹中径测量装置的构成、原理和使用方法。
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