excavator during construction main water supply pipeline laying underground storm sewers site |
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| navigate by keyword : building buildings cement conduit construction site crane culverts dig drainage pipe system guide hole industrial installation installing iron pipes laying network pipeline pit plumbing pumping reinforced repair work replacement sanitary sewer sewage wells sewerage storm tower cranes treatment trench tube underground utility infrastructure wastewater water main tightness |
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| Excavator during construction of main water supply pipeline. Laying underground storm sewers at construction site. Water main sanitary drainage system for a multi-story buildings |
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