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前言能源工业所用无缝钢管的需要量正在不断增长。由于能源开发向恶劣的环境发展,因此需要使用强度、韧性和尺寸精度都能满足这种苛刻工作条件的无缝钢管。斜轧穿孔—连轧管机组和斜轧穿孔—延伸机—自动轧管机组分别是生产5 1/2″以下和6—16″钢管常用的机组。近年来,在无缝钢管生产中逐步采用了计算机并取得了成功的结界;但是在钢管尺寸精度方面,特别是壁厚不均方面
Foreword The demand for seamless pipe for the energy industry is growing. As energy development advances into harsh environments, there is a need for seamless steel tubes that meet these demanding operating conditions with strength, toughness and dimensional accuracy. Slanting perforation - rolling pipe unit and cross-piercing perforation - extension machine - automatic pipe rolling unit are the production of 5 1/2 “and 6-16” steel commonly used units. In recent years, the gradual adoption of computers in the production of seamless steel pipe and the successful enchantment; but in terms of dimensional accuracy of steel pipe, especially uneven wall thickness