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一九七八年二月廿一日至廿五日在厂州召开了O形橡胶密封圈国家标准草案验证工作总结和测试工具鉴定会。参加会议的有国家标准计量局、第一机械工业部、化工部以及有关生产、使用、科研和标准计量等45个单位共57名代表。广东省第一机械工业局主持了测量工具鉴定会。国家标准计量局、第一机械工业部和化工部共同主持了验证工作总结会。会上,广州机床研究所做了关于回转式密封圈直径测量仪、测量锥棒及密封圈截面测量百分表等三种测试工具的研制工作总结汇报。与会代表检查了实测O形橡胶密封圈直径与截
On February 21st and 27th, 1978, a verification meeting for the draft national standard for O-ring rubber seals and a test tool appraisal meeting were held in the factory. A total of 57 representatives from 45 units including the National Standards and Metrology Bureau, the First Ministry of Machinery Industry, and the Ministry of Chemical Industry, as well as production, use, scientific research, and standard measurement, attended the meeting. The First Machinery Industry Bureau of Guangdong Province presided over the measurement tool appraisal meeting. The National Bureau of Standards and Metrology, the First Ministry of Machinery Industry, and the Ministry of Chemical Industry co-chaired the verification meeting. At the meeting, Guangzhou Machine Tool Research Institute made a summary report on the development work of three types of test tools, including rotary seal diameter measuring instrument, measuring cone rod and seal ring cross-section measuring dial gauge. The participants checked the measured diameter and cut of the O-shaped rubber seals.