metering pin meaning in English

调节油针
定径孔
定径销
计量针
量油杆

Grade with corrosion resistant binder ( waste water etc . ) sliding rings , sealing rings in construction of pumps , water meter pins , plungers , spraying nozzles , guiding and bearing parts , wearing parts in laboratory and milling and mixing plants , plugging parts gfk cable , etc
耐腐蚀性的牌号，用于割捆机、滑动环、建筑水泵中的密封环、水位计的销钉、活塞、喷嘴、承压零件、实验室中的耐磨零件和铣削混合设备。