Group 1: Patent Application - A patent titled "A Construction Process for Rotating Steel Box Beams Across Existing Lines" has been applied for by four companies: China Railway First Engineering Group Co., Ltd., China Railway First Group Co., Ltd., China Railway Xi'an Bureau Group Co., Ltd., and China Railway First Survey and Design Institute Group Co., Ltd. The patent was published under CN121295632A with an application date of October 2025 [1] - The patent involves a construction process that includes several steps: building supports, positioning tracks, pre-positioning the steel box beam, rotating the beam, removing tracks, and adjusting the beam's angle to reduce interference with existing lines [1] Group 2: Company Profiles - China Railway First Engineering Group Co., Ltd. was established in 1997, located in Xi'an, with a registered capital of 502.43 million RMB. The company has invested in 6 enterprises, participated in 5,000 bidding projects, and holds 381 patents [2] - China Railway First Group Co., Ltd. was founded in 1980, also in Xi'an, with a registered capital of 6.37 billion RMB. The company has invested in 208 enterprises, participated in 5,000 bidding projects, and holds 3 trademarks and 3,178 patents [2] - China Railway Xi'an Bureau Group Co., Ltd. was established in 2005, located in Xi'an, with a registered capital of 15.37 billion RMB. The company has invested in 37 enterprises, participated in 5,000 bidding projects, and holds 89 patents [2] - China Railway First Survey and Design Institute Group Co., Ltd. was founded in 1992, located in Xi'an, with a registered capital of 107 million RMB. The company has invested in 76 enterprises, participated in 5,000 bidding projects, and holds 3 trademarks and 3,427 patents [3]
中铁一局申请跨越既有线钢箱梁转体施工工艺专利，减少对既有线干扰
Sou Hu Cai Jing·2026-01-09 12:58