Procurement of gas supply works of Ganja Regional DOST and Prosthetic Orthopedic Rehabilitation Center and Guba DOST and Vocational Training Center in sloping trenches up to 2 m deep manual digging of soil without fixings, soil group: 3 Manual digging of trenches, pits and pits filling, soil group: 2 Manual planning of sites, soil group: 3 Laying pipelines from polyethylene pipes, diameter: 63 mm Polyethylene water and gas pipe with high flexibility, wide pressure range: diameter 63 mm, wall thickness 5.8 mm, PE 100, PN 16 Installation of insulated steel gas pipes in the trench, diameter: 80 mm (vertical footer)

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