more>>industry overview
- ▪ national railway fixed-asset investment reaches 355.9 billion yuan in the first half of the year, up 5.5% year-on-year
- ▪ successful completion of the first-phase overhaul and concentrated maintenance of the eastern section of chengdu-chongqing railway and xiangyang-chongqing railway in 2025
- ▪ reaching yan'an! the first high-speed railway track in the old revolutionary base area of northern shaanxi is connected!
- ▪ national railway data released: high-speed railway mileage reaches 48,000 kilometers!
- ▪ long rail connection achieved for track section i of ningbo rail transit line 6
- ▪ fixed-asset investment in national railways reaches 242.1 billion yuan from january to may, up 5.9% year-on-year
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news
on september 9, 2025, amid flying welding sparks at the lanxi east station construction site, china railway no.3 engineering bureau successfully completed its first turnout flash-butt welding operation using the independently developed un5-150zb6 mobile turnout flash-butt welding machine by aigre. this milestone marks that china railway no.3 engineering bureau has entered a new stage of efficient and high-quality welding in the field of turnout welding.
as a core intercity corridor connecting jinhua city and jiande city, the welding quality of turnouts on the jinhua-jiande intercity railway is crucial to the track smoothness and long-term operational safety. compared with the traditional aluminothermic welding technology—whose welded joint strength only reaches 50% of the base metal—the turnout flash-butt welding machine introduced by china railway no.3 engineering bureau from aigre achieves a rail joint strength of over 90% of the base metal, greatly improving the stability of joint quality.
currently, aigre's equipment has been widely applied in key national projects such as the chongqing-wanzhou high-speed railway and the xi'an-yan'an railway. the successful application of this technology in the jinhua-jiande intercity railway not only provides reliable technical support for the subsequent construction of the project but also injects new impetus into the high-quality development of china's railway industry.
