铁岭至大连输油管道(简称铁大线)提压问题本人曾作过探讨。经过一段时间实践,投产运行十年的铁大线,一些站段又突破了原来限定的最高出站运行压力值,输油压力升高0.15～0.4MPa,这在我国长输热油管道史还是第一次。 Tieling to Dalian pipeline (referred to as the iron line) pressure issue I had discussed. After a period of practice, put into operation a decade of iron line, some stations and broke through the original limit out of the original maximum outbound operating pressure, oil pressure increased 0.15 ~ 0.4MPa, which in our long history of oil pipelines or the first time.