NIRON CLIMA PP-RCT pipes and fittings from 3" to 8" were used for the heating system of some apartment buildings in Bloomington, Minnesota. NIRON was selected thanks to the special characteristics of its raw matyerial. The pipes and fittings that compose the NIRON range are in fact produced using random copolymer polypropylene PP-RCT, a plastic material with a special molecular structure ensuring high mechanical resistance and duration, even at high temperatures and pressures. The properties and other features of the various components make the NIRON system a great alternative to traditional material used in plumbing installations. Its temperature/pressure performance allows for the use of thinner pipes thus offering a greater flow rate with the same diameter.