The procurement project of concrete pipe segments for Shanghai Metro Line 19 has recently completed the bidding process. The production of pipe segments for the 46.2-kilometer underground tunnel has been undertaken by multiple industry-leading enterprises in sections.

Section 1 covers the section from Chengjiang Road Vehicle Depot to Sanlin South Station. Shanghai Construction Engineering Building Materials Technology Group Co., Ltd. won the bid with a price of 352.837707 million yuan, while Shanghai Tunnel Engineering Co., Ltd. ranked second with a slight difference.

Section 2 (from Lingzhao Xincun Station to Weifang Road Station) was won by China Communications Third Navigation Engineering Co., Ltd. for 302.679729 million yuan, with Shanghai Tunnel Engineering Co., Ltd. quoting 304.124527 million yuan.

Hualuo Zhongjiao Tunnel Engineering Bureau Co., Ltd. won the bid for Section 3 (Weifang Road Station to Liangcheng Road Station section) with a bid price of 289.042046 million yuan, and Shanghai Tunnel Engineering Co., Ltd. once again became the second candidate with a bid price of 290.477523 million yuan.

The 4th section (from Expo Station to Hongwan Road Station) was successfully won by Shanghai Tunnel Engineering Co., Ltd. with a bid of 241.385161 million yuan, followed closely by Shanghai Construction Engineering Building Materials Technology with a bid of 241.412342 million yuan.

The 5th section (from 128th Memorial Road Station to Baoshan Station) was also won by Shanghai Tunnel Engineering Co., Ltd. for 295.78926 million yuan, while Shanghai Construction Engineering Building Materials Technology's quotation of 295.830158 million yuan was unfortunately not selected.

This procurement uses single circular shield tube segments with an outer diameter of 6.6 meters and a wall thickness of 350 millimeters for the entire line. The ring width is mainly 1.2 meters and 1.5 meters, and some sections adopt pre embedded socket joint technology. After completion, the project will connect multiple districts such as Minhang, Pudong, and Baoshan, further optimizing the layout of Shanghai's urban rail transit network.(This article is from the official website www.seetao.com of Jian Dao. Reproduction without permission is prohibited, otherwise it will be prosecuted. Please indicate Jian Dao website+original link when reprinting.) Jian Dao website infrastructure engineering column editor/Yang Beihua