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This paper reports a systematic study conducted on a pot tester to establish the effect of velocity, concentration and particle size on erosion wear. Two correlations have been proposed, based on the data generated for equisized particulate slurries in the pot tester, to predict the expected erosion wear for two pipe materials, namely brass and mild steel. The weighted mean diameter has been established as the best representative diameter for the multisized particulate slurries. The proposed correlations have been used to predict the extent of uneven erosion wear in a slurry pipeline using local concentration, local effective particle size and average velocity. The comparison between predicted and experimental results shows agreement within ± 13.5% for brass and ± 14% for mild steel.