1991年9月3～8日,冶金部轧钢情报网第八届焊管(涂镀)生产技术交流会,在河北省张家口市召开,会议由张家口地区宁远钢厂承办。来自全国70余家单位的175名代表通过六天的会议,交流了经验,互通了信息,取得了预期的效果。大会收到论文71篇,通过大会宣 September 1991 3 ~ 8, the Ministry of Metallurgical Steel Information Network Welded the eighth (pipe coating) production technology exchange meeting held in Zhangjiakou City, Hebei Province, the meeting was held by Zhangjiakou Ningyuan Steel. 175 delegates from more than 70 units across the country exchanged experiences and exchanged information through six-day meetings and achieved the expected result. The conference has received 71 papers, passed the conference announcement