The problem of achieving a higher level of ductility of pipe steels of strength grades K60 (X70) and K65 (X80) is described. Results of laboratory and industrial experiments are shown, and requirements for pipe microstructure with improved deformation capacity are formulated. Technology is described providing the specified type of structure and steel target mechanical properties, and different production schemes for LTCC are applied making it possible to achieve the prescribed strength and ductility properties over a wide variation range. Results are provided for mass industrial production of rolled product and pipe with high deformation capacity.

中文翻译：

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大变形能力管材轧制产品制造技术的发展

描述了使强度等级为 K60 (X70) 和 K65 (X80) 的管钢获得更高水平延展性的问题。显示了实验室和工业实验的结果，并制定了对具有改进变形能力的管道微观结构的要求。描述了提供指定类型结构和钢目标机械性能的技术，并应用了不同的 LTCC 生产方案，从而可以在很宽的变化范围内实现规定的强度和延展性。为具有高变形能力的轧制产品和管材的大规模工业生产提供了结果。