The ratio of the amount of useful energy, power or work delivered by a machine to the amount of energy, power or work required to operate it, or effective operation measured by a comparison of production with cost.
WeldCor Supplies, Inc.
Your trusted, Canadian-owned welding supply store since 1996.
We proudly serve welders, fabricators, and buyers with expert advice and Canada’s largest inventory of welding wire, electrodes, consumables, and machines.
