【摘要】 介绍了国外大口径直缝焊管的生产工艺和技术发展 ,对我国大口径直缝焊管市场需求进行了预测和分析 ,提出了我国建设大口径直缝焊管生产线的必要性和需解决的问题更多还原

【Abstract】 The paper has described the production process and technology development of large diameter straight-welding pipe,predicted and analysed the market demand for large diameter straight-welding pipe in China,and put forward the necessity and the problems to be solved for building up of the large diameter straight-welding pipe line.更多还原