Electric Heating Pipes Out Diameter: 6.8-11.5mm, Wall Thickness: 0.42-0.65mm. Electric Heating PipesOut Diameter: 6.8-11.5mm, Wall Thickness: 0.42-0.65mm.Application: May be used for each kind of heat conduction material, as well as the electrical appliances interior use.We can produce according to customers' needs. Electric Heating Pipes