M30 segment tunnel bolts, strength grade 8.8 for Dongguan Rail Transit Line 1
In 2020, Anyang Railway Equipment Co., Ltd. provided M30 segment tunnel bolts, grade 8.8 hot-dip galvanizing to Dongguan Rail Transit Line 1
Dongguan Rail Transit Line 1 is one of the backbone lines of the urban rail transit network in Dongguan City, Guangdong Province.
Dongguan Metro Line 1 is the longest of the Dongguan subway lines, with a total length of 72.4km and 27 stations, including 5 urban rail transit transfer stations. Among them, the elevated line is 25.7km, accounting for 44.4% of the total line length; the underground line is 30.3km, accounting for 52.3% of the total line length; the ground line and transition section is 1.9km, accounting for 3.3% of the total line length.
In 2020, Anyang Railway Equipment Co., Ltd. provided M30 segment tunnel bolts, strength grade 8.8 hot-dip galvanizing to Dongguan Rail Transit Line 1, and the acceptance standards for segment tunnel bolts implemented “Specifications of high strength bolts with large hexagon head, large hexagon nuts, plain washers for steel structures” (GB/T1231) and “Code for construction and acceptance of shield tunneling method” (GB50446-2008).
