Haivan Pass Tunnel
CONSTRUCTION
PROJECT
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Progress Report > Package IA - North Tunnel Section
Placing
concrete for normal section connected to Layby left No.1
at
Main Tunnel Segment No. 29 Station 2+015.5 to 2+027.5
Đặt khuôn bê tông Đoạn 29 Hầm chính, Km. 2+015.5 ~ 2+027.5
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