The electromagnetic heating of heavy crude oil in cylindrical pipes represents a novel technique to reduce fluid viscosity and diminish the cost required for its transportation. In this study, the oil viscous fluid momentum and energy balances, which include the effects of electromagnetic heating, variable viscosity, and fluid dielectric properties, are solved in cylindrical coordinates. The electromagnetic energy absorbed by oil is converted into sensible heat, which could significantly reduce the viscosity of heavy crude oil fluids. This drop in fluid viscosity diminishes flow pressure losses in pipelines, which reduces the number and size of pumping stations between oil producers and consumers. Different pipe materials are considered here to determine the effect of their dielectric properties in the fluid flow. Simulation results show that pipe materials with large electromagnetic absorption tend to attenuate the pipe interior electromagnetic field, which reduces the direct warming of the fluid. This significant reduction in the direct fluid heating suggests that pipes made by transparent electromagnetic materials are preferred for this type of application. A fixed cost analysis of using electromagnetic heaters was made to maximize the distance between pump stations in a long pipeline stretch. The simulation results demonstrate that electromagnetic heaters increase the distance between pump stations by 30%.