In this research, the quality of recycled OCC pulp collected from different local companies was investigated compared with those of the local NSSC pulp from Mazandaran Wood and Paper Industries(MWPI). Also, the effect of different mixture from OCC pulp was evaluated with NSSC pulp. In addition, the effect of refining was studied on strength properties of OCC pulp and also combination of OCC and NSSC pulp. The results showed that, the NSSC pulp has the better fiber classification properties and higher strength properties compared to the recycled OCC pulp. Also, quality of OCC recycled pulps prepared from different companies was different because of the variety of raw material and production process. Refining of OCC pulp led to increase the mechanical properties of paper. The results of the handsheets and fluting papers prepared with various charges of OCC recycled pulp show that the majority of the mechanical properties were decreased and only tear strength were increased but difference between strength values were not shown significant. Totally, the results showed that by installation of an independent OCC mill in Mazandaran Wood and Paper Industries (MWPI) or completing present stock preparation with cleaning and suitable refining system, there is possibility to increase OCC consumption for fluting production with desirable quality.