“紧固件用钛及钛合金棒材规范”和“超低温用TA7ELI钛合金饼坯规范”两项国家军用标准,经过编制组3年的努力,于1993年12月9～12日在镇江通过了由中国有色金属工业总公司组织的专家审定.参加审定会的有中国有色金属工业总公司标准计量研究所、宝鸡有色金属加工厂、沈阳有色金属加工厂、西北有色金属研究院、北京有 The “National Standard for Tungsten and Titanium Alloy Fasteners and Bars” and the “National Standard for TA7ELI Titanium Alloy Cake for Ultra-Low Temperature” passed the compilation of three years’ hard work and passed in Zhenjiang from December 9 to December 1993 Examined and approved by experts organized by China Nonferrous Metals Industry Corporation, attended the validation meeting of China National Nonferrous Metals Industry Corporation Standard Metrology Institute, Baoji non-ferrous metal processing plants, non-ferrous metal processing plants in Shenyang, Northwest Nonferrous Metal Research Institute, Beijing has