SUPPLY OF SUBMERSIBLE PUMPS FOR NON-DOMESTIC WASTEWATER DISCHARGES, OF: 3"= 45 PIECES, 4"= 18 PIECES. TOTAL QUANTITY: 63 PIECES., ACQUISITION OF GRILLE IN 124 D400 DUCTILE IRON CHANNEL 1.0 X 1.10 METERS. QUANTITY: 100 PIECES. (EXPIRED)