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“拉力芯棒斜轧延伸新工艺工业试验研究”是冶金工业部重点科研项目,由北京钢铁学院、华东冶金学院、常熟市无缝钢管厂合作进行工业试验。1988年1月7日在常熟通过了冶金部部级鉴定。与会专家及代表对这项科研成果给予了高度评价,一致认为: (1) 该新工艺具有生产小口径、薄壁、高精度、内表面质量高的钢管的能力,壁厚偏差可达±5～8％,径壁比可达20,并可轧长管,为提供合理的冷拔管坯,减小冷拔道次,
“Tensile mandrel oblique rolling extension of the new technology industry experimental study” is a key scientific research project of the Ministry of Metallurgical Industry, Beijing Iron and Steel Institute, East China Institute of Metallurgy, Changshu seamless steel pipe plant for industrial trials. January 7, 1988 in Changshu passed the Ministry of metallurgy ministerial identification. The experts and representatives at the conference highly praised the achievements of the scientific research and agreed that: (1) The new process has the ability to produce small diameter, thin wall, high precision and high inner surface quality steel pipe with a deviation of the wall thickness of ± 5 ~ 8%, diameter ratio of up to 20, and rolled long tube, in order to provide a reasonable cold drawn tube, reduce the cold pass,