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M30 Tunnel Segment Bolts for Chengdu Metro Line 17

In 2021, Anyang Railway Equipment Co., Ltd. provided 4,000 sets of M30 Tunnel segment bolts to II phase of Chengdu Metro Line 17.

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Chengdu Metro Line 17 is the ninth subway line built in Chengdu, Sichuan Province, China. The urban express line in the district started construction of the first phase on February 27, 2017, and started operation on December 18, 2020. The second phase of Chengdu Metro Line 17 has a total length of about 24.76km, with a total of 18 stations, all of which are underground.

In 2021, Anyang Railway Equipment Co., Ltd. provided 4,000 sets of M30 tunnel segment bolts to II phase of Chengdu Metro Line 17. Each set of tunnel bolts contains 14 pcs of longitudinal seam bolts: M30 R350, arc length 530, mechanical performance grade 6.8, hot-dip galvanized 0.07mm; 19 pcs of circumferential seam bolts: M30 R350, arc length 530, mechanical performance grade 6.8, hot-dip galvanized 0.07mm, 33 pcs of nuts: strength grade 6, hot-dip galvanized 0.05mm; 66 pcs of washers: mechanical property grade Hv=140, electro-galvanized 0.07mm.

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