讨论了几种通用的粗成型及精成型轧辊的设计。分析了用于生产不同特种形式焊管的优缺点及可能产生的问题。
This paper discusses a few design methods for current rolls with coarse type and fine type and analyzes the characteristic and problem of rolls in producing various special welded pipes.
设置和操作重金属工作机器，如刹车片，轧辊，剪板机，火焰切割机和钻床，来切割，塑型和成型金属零件或部分。
Set up and operate heavy-metal working machines such as brakes, rolls, shears, flame cutters and drill presses to cut, shape and form metal into parts or sections.
我们吸取世界轧辊成型机行业的成功经验。
We learn from the world roll machine industry's successful experience.
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