A neutrally buoyant particle in pipe flow is known to undergo a radial migration for finite Reynolds number flows. This effect was first observed by Segre and Silberberg, who noted a radial equilibrium position at a radius r= 0.6R in a pipe of radius R, in conditions of finite but low Re. These results have been extended to show that the equilibrium position of the particles is moved toward the wall as Re increases. Moreover a new equilibrium position closer to the center was observed to become dominant at elevated Re. A comparison with asymptotic theories is provided.