一九七三年七月六日至八月六日一机部石油化工机械行业超声波探伤经验交流会在兰州召开。此次会议由一机部重型局委托兰州石油化工机器厂、金州重型机器厂、合肥通用机械研究所组织,出席会议的有一机部、燃化部等系统的制造、使用、科研和高等院校四十七个单位,八十二名代表。 From July 6 to August 6, 1973, an exchange of experience in ultrasonic flaw detection in petrochemical machinery industry was held in Lanzhou. The meeting was entrusted by the Bureau of Heavy Machinery of Lanzhou Petrochemical Machinery Plant organized by Lanzhou Petrochemical Machinery Factory, Jinzhou Heavy Machinery Factory and Hefei General Machinery Research Institute. At the meeting, there was a system of manufacturing, using, scientific research and higher education School 47 units, 82 representatives.