China Railway Seventh Bureau Group Xi'an Railway Engineering Co., Ltd. was founded in 1948, formerly known as the Shenyang North Second Repair Team of the Engineering Corps of Shenyang Railway Military Administration, and made significant contributions to the War to Resist US Aggression and Aid Korea and the construction of New China. The development of the company has undergone several changes, and it has been subordinate to the General Administration of New Railway Engineering of the Ministry of Railways, Xi'an Railway Bureau, Zhengzhou Railway Bureau, Xi'an Railway Branch, and China Railway Electrification Bureau. In 2014, the company was incorporated into China Railway Seventh Bureau Group, and its subordinate section was separated into Road and Bridge Company, and the company was renamed "China Railway Seventh Bureau Group Xi'an Railway Engineering Co., Ltd.", referred to as "West Railway Engineering Company".
The company has 2,005 employees, including 1,333 professional and technical personnel, and has the first-class qualification for general contracting of railway engineering, construction engineering, municipal public works construction, and professional contracting of tunnel engineering. The second-level qualification for general contracting of communication engineering and mechanical and electrical engineering construction, and the second-level professional contracting of bridge engineering, foundation engineering, building mechanical and electrical installation engineering, lifting equipment installation engineering, and building decoration engineering; Highway engineering, water conservancy and hydropower engineering construction general contracting level 3 qualification, steel structure engineering professional contracting level 3, ready mixed concrete professional contracting is not graded. The registered capital of the enterprise is 510 million yuan, and it has 453 sets (pieces) of construction machinery such as bridge erecting machines, shield machines, rail cars, and rock drilling rigs, which can meet the professional construction needs of bridge making and transportation frames, high-performance concrete production and transportation, long tunnel excavation, earth and stone rolling, and railway track laying. The company adopts the direct management mode of engineering projects, and has 6 professional branches.
The company adheres to the enterprise spirit of "having the courage to leapfrog and pursuing excellence", and has successfully completed a number of national key construction tasks. It has undertaken more than 10 urban rail transit projects in Beijing, Tianjin, Guangzhou, Foshan, Hangzhou, Nanjing, Xi'an, Zhengzhou, Taiyuan, Qingdao and Dalian. The content covers stations, tracks, viaducts, depots, electromechanical and other aspects. Among them, the construction of Guangzhou Metro Line 3, Line 8 transfer station --- Kecun station, when the Guangzhou Metro network in the only underground four-layer subway transfer hub, the station foundation pit excavation up to 30 meters, the safety level of the special foundation pit, during the construction of the "Azalea" "Ibudu" and other typhoons and heavy rainfall test. Xi'an Metro Line 1 crossed the ancient city wall of Xi'an and crossed the old moat bridge, and the shield machine safely crossed the old bridge with a difference of 3.5 mm, passing the biggest risk point. It has successively participated in the construction of Beijing-Zhangzhou, Jingshi, Zhonglan, Xicheng, Xishi, Dunbai, Jinqin, Beijing-Shanghai, Daxi, Zhengxi, Yinxi and other railway passenger dedicated line projects, and has mastered a full set of construction technology for high-speed railways with a speed of 350 kilometers per hour. Among them, the Beijing-Zhangjiakou high-speed railway, as China's first intelligent high-speed railway with a speed of 350 kilometers per hour built by the self-developed Beidou satellite navigation system, is also the world's first high-speed railway with a speed of 350 kilometers per hour. The six-line inspection warehouse of the Beijing-Zhangjiakou Railway Beijing North EMU Project won the "National Welding Engineering Award". The Qin-Shenyang Passenger Dedicated Line is the first passenger dedicated line in China, the Zhengxi Passenger Dedicated Line (Beihuan Interchange Bridge) is the first high-speed railway in Northwest China, and the Xicheng Railway Passenger Dedicated Line is the first high-speed railway to cross the Qinling Mountains, which won the National Quality Engineering Award. The No. 2 tunnel of Xingxing Village and the No. 1 tunnel of Baimian Gorge in the Yang'an No. 2 line project belong to the long tunnel, which are 2,646 meters and 7,134 meters respectively, and the double-track tunnel of the Zhuanshiliang Railway of the Zhonglan Passenger Special Project is 4,578 meters long, and the length of the Lanhe railway tunnel is 13,433 meters; The 11-kilometer Qinling Cuihuashan Tunnel of the second line of Xikang has mastered a number of long tunnel construction technologies such as tunnel multi-karst cave treatment, long tunnel ventilation and drainage, and tunnel surface treatment; It has undertaken the construction of 125 railway tunnel projects, including Shenghongqing of Wuhan-Kowloon Railway, Baishihe of Xiangyu Second Line, Cuihuashan of Xikang Second Line, and Zhonglan Passenger Dedicated to Shiliang Tunnel. He has mastered the bridge construction technology such as cantilever hanging basket, tie arch, continuous beam, long-span beam turn, water pier, high pier platform, etc. It has undertaken the construction of large-scale water projects in the second phase of the curve, such as the Xi'an Emergency Water Supply Project, the Weiwei Water Source (Groundwater), the Binhai New Area Water Supply Project in Maoming City, Guangdong, and the Water Ecological Environment Treatment in Maonan District, Maoming. Among them, the Maoming Waterworks has the domestic advanced level of waterworks, which solves the problem of domestic water supply for 300,000 residents in Maoming Binhai New Area, and creates the shortest construction time record for similar projects in Guangdong Province. In Shaanxi, it has successively undertaken the construction of important provincial tributary control projects - Xi'an Jinghe River Mainstream Boat Zhang Bank Protection Project, as well as the Jinghe River North Bank Rural Safe Drinking Water Project, Gaoling District Weihe Wucun Yang-Lintong Boundary Section Beach Improvement Project and other water conservancy projects. In the field of municipal heating engineering, it undertook the construction of Fengjingyuan, Fengbinshui Town, and Fengxi New Town geothermal energy heating projects in Xi'an, and developed key technologies for drilling fluid technology, press drilling technology, anti-oblique straightening technology, etc., and guided the drilling construction of geothermal wells of the project. At the same time, the medium and deep non-interference geothermal energy energy heat extraction device and heat exchange tube installation device are adopted, which improves the installation quality and installation efficiency of heat exchange tubes in medium and deep non-interference geothermal wells, and achieves good social and economic benefits. It has also undertaken a number of municipal, highway and housing construction projects such as the National Crop Germplasm Bank, the greening of Xiong'an New Area, the Chongqing Panlong Energy Storage Power Station, the Tibet Qamdo Highway, the Liaocheng Phoenix Industrial Park, and the Wuwei Leitai Cultural Tourism.
The company conscientiously fulfills the social responsibility of central enterprises, and has set a record in the defense of the "Qingchuan River Bridge" to resist US aggression and aid Korea, the "one shot out of Guanyinshan Station" of Baocheng Railway, the highest record in the country for the construction of 400.1 meters of tunnel construction in a single Yuecheng Cave of Sanmenxia Reservoir Special Line, the overall elevation of the bridge and catenary tower under the uninterrupted traffic of Baocheng Railway Weihe Bridge by 3 meters, the "Baqiao speed" of the 400-meter double-track railway Bahe Bridge built in 58 days, and the rescue of Baocheng Railway 109 Tunnel in the Wenchuan earthquake. In recent years, the company's construction projects have won 2 "Zhan Tianyou Awards", 3 "National Quality Projects", 1 "First Prize of Railway Quality Engineering of the State Railway Administration", 1 "Construction Site Safety Production Standardization Learning and Exchange Project of Construction Projects", 2 "National Customer Satisfaction Projects", and many provincial and ministerial high-quality projects such as Chang'an Cup, Great Wall Cup, West Lake Cup, Fenshui Cup, Zhan Tianyou Hometown Cup, China Railway Cup, etc., and the company has won the National Excellent Construction Enterprise, National Customer Satisfaction Construction Enterprise, and National In 2017, it was approved by the Shaanxi Provincial Department of Housing and Urban-Rural Development as "Key Support for Advantageous Enterprises in the Construction Industry", in 2018 it was rated as a provincial enterprise technology center by the Shaanxi Provincial Department of Industry and Information Technology, and in 2020, it was rated as a large-scale development enterprise for high-quality development by the Xi'an Housing and Urban-Rural Development Bureau, and the company won the title of "Four Good" Leadership Team of the Group Company in 2022. In 2023, it will be rated as a high-tech enterprise by the National High-tech Enterprise Recognition Management Leading Group, and in the same year, it will rank 76th among the top 100 enterprises in Shaanxi and 46th among the top 100 enterprises in Xi'an.