Tunnel Segment Bolts Producer for Changsha Metro Line 2
In 2022, Anyang Railway Equipment Co., Ltd provided 70,532 sets of tunnel segment bolts to Changsha Metro Line 2.
Changsha Metro Line 2 is the first subway line completed and operated in Changsha City, Hunan Province, China. The first phase of the project (Wangchengpo Station to Guangda Station) was opened for operation on April 29, 2014. On December 28, 2015, the first phase of the west extension project (Meixi Lake West Station to Wangchengpo Station) was opened and operated, and its logo color is ice blue.
Changsha Rail Transit Line 2 starts from Meixihuxi Station in the west, passes through Yuelu District, Tianxin District, Kaifu District, Furong District, Yuhua District and Changsha County in Changsha City, connecting Changsha West Bus Station, Changsha Station and Changsha South Station The large passenger transport hub ends at Guangda Station in the east, and the line runs roughly from east to west. the
The second phase of the west extension of Changsha Metro Line 2 is located in Yuelu District, Changsha City, Hunan Province. It starts from Changsha West Station (the original planned Jinqiao hub), goes south along Huizhi Road into the core area of Meixi Lake, and ends at the west extension of Line 2. Leifeng West Station (not included) is the starting point of the second phase of the bidding section of the second phase of the project. The total length of the single line is 11.05km. The main body and auxiliary civil works of Changsha West Station (excluding) to Leifeng West Station (excluding) the main line of 3 stations and 6 sections (including the entrance and exit line section, the turnaround line section on the north side of Changsha West Station), and the secondary section of Changsha West Station Structure, civil engineering of intermediate air shaft, civil engineering and electromechanical engineering of parking lot, track engineering (including Changsha West Station and parking lot).
In 2022, Anyang Railway Equipment Co., Ltd provided 70,532 sets of tunnel segment bolts to Changsha Metro Line 2.
- The longitudinal and circumferential hand holes of the segment are connected by M27 bolts, 16 sets/rings of connecting bolts and their connecting pairs for circular seams, 12 sets/rings of connecting bolts and their connecting pairs for longitudinal seams, each set includes 1 connecting bolt, 1 Nut and 2 washers.
- The mechanical performance grade of bolts is 8.8, the mechanical performance grade of nuts is 8.0, and the minimum mechanical performance grade of flat washers is Hv=300.
- Bolts, nuts, and washers are all anti-corrosion with zinc-based chromate, and the coating thickness is 6 μm.
