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30多年来,经济全球化带动标准全球化反映在ASME规范在计量单位制上的一波三折,反复多次,终于在2004版正式宣布SI制和美国习惯单位制同等有效,可以并存。在2006年颁布的规范案例号2523中进一步批准在一部规范里面可以采用美国习惯单位制、SI制和(或)当地习惯单位制的组合。这一决定使ASME规范更具有柔性,在国际市场中更具有竞争力。 1 美国习惯单位制不能立即被废止的原因 1975年美国国会通过了1个《公制单位换算法》(METRIC CONVERSION ACT)。有人认为从那时起,美国是处于美国习惯单位制向公制单位的过渡时期,但到上个世纪末似乎没有任何动静。1988年美国通过了强制政府部门在1992年采用公制的《公共汽车贸易和竞争法》,但也没有起到什么作用。美国
For more than 30 years, globalization led by globalization has been reflected in the ASME code twists and turns over the unit of measurement system. Repeatedly many times, the 2004 version officially announced that the SI system and the U.S. customary unit system are equally effective and can co-exist. Further approved in Code Case No. 2523 issued in 2006 is the combination of US customary unit system, SI system and / or local custom unit system that can be adopted in a regulation. This decision makes the ASME Code more flexible and more competitive in international markets. 1 US customary unit of the system can not be abolished immediately 1975 US Congress passed a “Metric Conversion Act” (METRIC CONVERSION ACT). Some people think that since then the United States has been in a period of transition from the customary unit system to the metric system in the United States, but it seems that nothing has happened by the end of the last century. In 1988, the United States adopted a compulsory public sector “bus trade and competition law” imposed by the government departments in 1992, but it did not help. United States