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本修改单经国家技术监督局于1990年7月20日以技监国标发第100号文批准,自1990年10月5日起实施。1 .2 .2.2条第一行中更改钢号:或极度危害介质的压力容器。
This revised form was approved by the State Bureau of Technical Supervision on July 20, 1990 with the title of Technical Supervision GB 100, and implemented since October 5, 1990. Change the steel number in the first line of paragraph 2.2.2.2: or a pressure vessel that is extremely hazardous to the medium.