在批林批孔运动胜利展开逐步深入的大好形势下,为了促进高锰钢辙叉质量的不断提高和进一步发展,交通科技委于1974年4月1日至6日,在山海关桥梁工厂召开了高锰钢辙叉技术交流会。参加会议的有交通部铁路基建局,工电局,各铁路局,山海关、宝鸡桥梁工 Under the excellent situation of the victory of the pro-Lin bidding movement, in order to promote the continuous improvement and further development of the quality of the high-manganese steel frog, the Transportation and Technology Committee was held at Shanhaiguan Bridge Factory from April 1 to April 6, 1974 High manganese steel frog technology exchange. Participate in the meeting of the Ministry of Transportation Railway Infrastructure Bureau, the Bureau, the Railway Administration, Shanhaiguan, Baoji Bridge