E7018 HR aka E7018 H4 Rare low hydrogen mild steel electrodes recommended when controlled diffusible hydrogen levels are needed with and also a low-moisture–absorbing coating [moisture resistant]. These rods are formulated to have x-ray quality welds with easy slag removal, excellent welder appeal in any position with both AC and DC+ polarity even on those poor weldable steels. Welding of piping, cold rolled steels, bridges, ship building, boiler and pressure applications, power plants and many other fabrications projects.