论文部分内容阅读
一、H型钢的发展情况随着建筑与结构的大型化、高层化和大跨距化以及铁路运输的高速化,要求提供大量的巨型宽边无内侧斜度的钢梁(即H型钢)和高精度、高质量的钢轨。
I. Development of H-beams With the enlargement of buildings and structures, high-rise and large-spans, and the high-speed railway transportation, it is required to provide a large number of giant wide-width steel beams without internal inclination (ie, H-beam) High-precision, high-quality rails.