在五十到六十年代里,由于经济景气,世界共有60套冷连轧机投入生产。而在近五年时间里,由于经济衰退,世界新订冷连轧机只有五套,而且这些新订的轧机中,北美和西欧一套也没有。目前北美50%的冷连轧机是二十年前 In the 1950s and 1960s, a total of 60 cold tandem rolling mills were put into production in the world due to the economic boom. In the past five years, due to the economic downturn, there were only five new tandem cold rolling mills in the world, and none of these new mills were in North America and Western Europe. At present, 50% of North American cold tandem rolling mill is 20 years ago