"Officine Riva S.p.A." is specialized in manufacturing washers, plates, rings and items pressed according to drawings, with 12 to 300 ton presses. The equipment design, manufacturing and maintenance are carried out by a skilled staff using computer numerically controlled machine tools, while a modern heat treatment plant assures a top quality manufacturing of hardened and tempered as well as carbonitrided items. Are available automatic grinding machines for packing rings, and a wide range of machines for the 100% selection of the items to be automatically assembled.