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介绍了为应对近几年来对更高强度较厚壁厚钢管的需求,日本JFE制钢公司开发的抗拉强度490～780 MPa、屈服强度385～630 MPa系列钢管产品,阐述了由于这些钢管产品都是采用高性能厚板制造,所以钢管的力学性能,尤其是屈服强度(YS)和屈服比(YR)性能更适用于建筑构架的建造。另外,根据各种设计的不同要求,JFE制钢公司通过控制制造钢管所用厚板的力学性能和制管工艺,既能制造低屈服比(YR)钢管,又能制造高屈服比(YR)钢管两种类型的建筑结构件用钢管。
In order to cope with the demand of higher strength and thicker wall thickness steel pipe in recent years, the series of steel pipe products with tensile strength of 490 ~ 780 MPa and yield strength of 385 ~ 630 MPa developed by Japan JFE Steel Manufacturing Co., Ltd. are introduced. Since these steel pipe products Are made of high-performance heavy plate, so the mechanical properties of steel pipe, especially the yield strength (YS) and yield ratio (YR) performance is more suitable for the construction of the building frame. In addition, depending on the requirements of the various designs, JFE Steel can manufacture both low yield ratio (YR) steel pipes and high yield ratio (YR) steel pipes by controlling the mechanical properties and pipe manufacturing process of the heavy plate used in the manufacture of steel pipes Two types of steel pipe for building structures.