ESThe general objective of this contract is the operational improvement of the distribution network through sectorization. The following actions are proposed: - action 1. network sectorization. - action 2. Replacement of iron collector. It is proposed to replace 3 meters of the current iron collector (DN150) located at the outlet of the Riera de Gualba catchment, with a new stainless steel pipeline of the same nominal diameter (DN 150).Ajuntament de GualbaPLACSP 20899200€214,1081 lot, 3 monthsWed 2 Dec23:59 in Madrid18days