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无缝钢管作为开发能源之用的材料,其需求量正日益增加。由于能源开发是在恶劣环境中进行,这就要求无缝钢管的硬度高、强度高、尺寸精确,足以经受苛刻的工作条件。辊式穿孔机与芯棒式轧管机相结合以及辊式穿孔机与自动轧管机相结
Demand for seamless pipe as a source of energy is growing. Since energy development is carried out in harsh environments, this requires that seamless steel pipes be high in hardness, high in strength and dimension accurate enough to withstand harsh working conditions. Roll piercing machine and the mandrel mill combined with the roller piercing machine and automatic pipe mill phase