天气预报 > 社会 > 高铁钢轨是国产的吗
高铁钢轨是国产的吗
更新时间: 2021-06-20 16:01:58  

这方面很多都东西没有国产,比如高铁的车轮,车轴等特种钢都是进口的,主要有日本新日铁和日本神钢的,轴承是进口日本NTN和瑞典SKF的,螺丝是进口日本哈德洛克的,高铁机车内部的牵引电力和电力设备几乎都是进口德国西门子的,就连受电弓都是外国技术。

关键词: 钢轨 国产

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