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M24 Tunnel Segment Bolts , stregnth grade 8.8 for Guangzhou Metro Line 11

In 2018 and 2019, Anyang Railway Equipment Co., Ltd. provided M24 segment tunnel bolts with the length of 1.5m and 1.2m, strength grade 8.8 hot-dip galvanizing to Guangzhou Metro Line 11.

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Guangzhou Metro Line 11 (Guangzhou Metro Line 11) is one of the urban rail transit lines under construction by Guangzhou Metro. The total length of Guangzhou Metro Line 11 is 43.2 km, all of which are underground lines.

In 2018 and 2019, Anyang Railway Equipment Co., Ltd. provided M24 segment tunnel bolts with the length of 1.5m and 1.2m, strength grade 8.8 hot-dip galvanizing to Guangzhou Metro Line 11, 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).

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