Haivan Pass Tunnel
CONSTRUCTION
PROJECT
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Progress Report > Package IA - North Tunnel Section
Center Drainage Concrete Pipe D400mm Setting at Main Tunnel up to Sta. 2+170; Lt+460.0m
Đặt ống bê tông D400mm cho hệ thống thoát nước giữa đến Sta. 2+170, dài 460.0m
Tháng 08/2003 - Trở về
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