อัปโหลดแล้ว 5 ปี ก่อนหน้านี้
The STEP project involved five Herrenknecht Tunnel Boring Machines for the construction of 41m of a deep #sewertunnel, 43km of supply tunnels, which are smaller in diameter to transport the sewage to the treatment plants, and an underground pumping station at Al Wathba with a pumping capacity of 30m³ per second. Check this project details here: https://www.encardio.com/strategic-tunnel-enhancement-programme/
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