Delivery Of New: 1. Dn 860 Casing Pipes Made Of A Material Completely Resistant To Corrosion And The Effects Of Aggressive Soil And Water Environment, With Peripheral Stiffness Not Less Than Sn 10,000 N/M², Intended For Installation In An Open Trench And Equipped With A Connection System Ensuring Tightness, Material: Grp, In Sections Of 6 M - 10 Pcs. 2. Connections Of External Pipes With An Elastomer Gasket (Epdm) Dn 860, Width 230Mm - 8 Pcs.