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在我国,每年建筑用钢量仅有1％用于预制钢结构上,与发达国家80％以上的用量相比差距很大。按估计我国每年约有500万m~2以上的非居住类建筑采用预
In China, only 1% of the steel used for construction is used on prefabricated steel structures each year, and there is a big gap compared to more than 80% of the use in developed countries. It is estimated that about 5 million m2 or more non-residential buildings will be used each year in China.