根据国机管〔2 0 0 0〕 112号文“关于机械工业产品质量分等标准有关事宜的通知”的规定 ,现行分等标准有效期截止到2 0 0 1年 12月 31日 ,气体分离与液化设备的产品质量分等标准有以下 2 5项已废止 ,见表 1。表　已废止的气体分离与液化设备产品质量分等标准标准编号标准名称 According to the “Circular on the Relevant Matters Concerning Quality Standards for Machinery Industry Products” No. 112 of the State Council of the People’s Republic of China [2000], the current classification standard expires on December 31, 2001. The following 25 items of product quality standards for liquefaction equipment have been repealed, as shown in Table 1. Table Abolished Gas Separation and Liquefaction Equipment Product Quality Rating Standard Standard Numbering Standard Name