随着国民经济的迅速发展,我国铜加工业已成为世界铜加工材生产、进出口和消费大国。2004年我国铜加工材总产量达到419.6万吨,超过美国的357.4万吨居世界第一位;铜管产量已经连续两年居世界第一位,并且实现了出口大于进口。特别是铜管产品中的代表品种——精密铜管(空调管、水道 With the rapid development of the national economy, China’s copper processing industry has become the world’s copper processing material production, import and export and consumer countries. In 2004, the total output of copper processing materials in China reached 4.196 million tons, surpassing 3.574 million tons in the United States and ranking the first in the world. The output of copper pipes has been the largest in the world for two consecutive years, and the export was greater than that of imports. In particular, copper products in the representative varieties - precision brass (air conditioning pipe, waterways