NIRON CLIMA PPR pipes and fittings Ø160mm (6") have been installed for the HVAC system of the new Centro Comercial Finestrelles shopping mall that is due to open soon in Barcelona, Spain. NUPI polypropylene systems are particularly suitable for installation in large collective buildings such as shopping malls and schools, thanks in particular to the significant advantages that they can obtain, i.e. reduction of system costs thanks to greater hydraulic capacity (due to a reduced thickness of even 18%), lower piping weight, high performance under pressure and reduced piping diameter in some projects. The pipes and fittings that compose the NIRON range are suitable for the distribution of hot and cold water in plumbing and air-conditioning systems and are made using random copolymer polypropylene, a plastic material with a special molecular structure that ensures high mechanical resistance and duration, even at high temperatures and pressures.