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波兰格利维策冶金学院发明了一种能同时将两根或多根圆形坯料拉拔成异型线材的新型拉拔机。该拉拔机由塔尔努夫的胡特马斯冶金机械设计研究所设计,扎梅特机械制造厂制
Poland Gliwice Metallurgical Institute invented a can simultaneously draw two or more circular blanks into a special wire drawing machine. The drawing machine by the Tühneff Hu Temasi Metallurgical Machinery Design Institute, Zamet Machinery Manufacturing System