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从各国最近发表的材料中可以看出,在各国无缝钢管生产中有一些新的动向很值得注意,现简单归纳如下。一、无缝钢管生产有增长的趋势纵观世界各国钢管生产发展的历史,可以看出,焊管所占的比例在不断增加,一般都在50％以上,有的超过60％甚至70％。焊管增长速度较快,而无缝钢管的增长相对缓慢,这一直是钢管生产的总趋势。但是,自从1973年世界石油危机以来,情况有了变化。有的国家(如苏联、西德、法国等)焊管比例不再增加,焊管和无缝钢管生产按比例发展;而有的国家工“
It can be seen from the recently published materials from various countries that there are some new trends in the production of seamless steel pipe in various countries. These are very briefly summarized as follows. First, the trend of seamless steel pipe production growth Looking at the history of the world steel production development, we can see that the proportion of welded pipe is increasing, generally more than 50%, and some more than 60% or even 70%. Pipe growth faster, while the relatively slow growth of seamless steel pipe, which has always been the general trend of steel production. However, things have changed since the world oil crisis of 1973. Some countries (such as the Soviet Union, West Germany, France, etc.) no longer increase the proportion of pipe, welded pipe and seamless steel pipe production in proportion to the development; and some national workers "