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1990年6月15日,由冶金部科技司主持召开了粉末涂层钢管及其工艺鉴定会。物资部、石油部、化工部、建设部、交通部、核工业部以及北京钢铁研究总院、北京市市政设计院等28家单位的50余名专家、教授参加了会议。会议审查了各种技术报告以及用户的意见,并考查了生产现场。经过认真严肃的讨论和审查,由专家组成的鉴定委员会一
June 15, 1990, chaired by the Department of Science and Technology, Ministry of Metallurgical powder coated steel pipe and its appraisal process. More than 50 experts and professors from 28 departments including Materials Department, Oil Department, Ministry of Chemical Industry, Ministry of Construction, Ministry of Communications, Ministry of Nuclear Industry, Beijing Institute of Iron and Steel Research and Beijing Municipal Design Institute attended the conference. The meeting examined a variety of technical reports and user comments, and examined the production site. After serious and serious discussion and review, an accreditation committee composed of experts