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对当前热轧无缝钢管生产中连铸管坯的采用，新型穿孔机、轧管工艺设备的发展和改进，在线热处理以及多层次在线检测装置等重大技术问题进行了评述。
This paper reviews the application of continuous casting tube in the production of hot rolled seamless steel pipe, the development and improvement of new piercing mill and rolling process equipment, on-line heat treatment and multi-level on-line testing equipment.