发明授权
US5419387A Continuous rail production 失效
连续铁路生产

Continuous rail production
摘要:
A superior unitary one quarter mile long railroad rail and system and method for manufacturing the same. The method of manufacture is characterized by the use of a continuous rolling process and the in-line controlled cooling of the rail. The system produces very long rails without any weld seams.
公开/授权文献
信息查询
0/0