Maanrakennus Keränen oy is an experienced and versatile civil engineering company, whose area of activity is mainly the vicinity of Oulu, but the company has also operated in various contract projects, e.g. in the metropolitan area. Reliability, flexibility and reliability best describe our business, and driven by these factors, we have kept our business running for more than 35 years. Our services include almost all aspects of civil engineering, as well as hydraulic and network construction. CURRENT AFFAIRS 9/10/2012 - New homepages Maanrakennus Keränen Oy's new website published. Warm welcome!