... temperature -Diameter: 8-54mm -Length: 240-4000mm Accurate and Low resistance Spiral type Sic furnace heater rod Double ... of the Double Spiral Shape Type are substantially higher than other silicon carbide elements, consequently operating voltages ... ceramics, power metallurgy, glass, and meallurgy.3)Character: Higher temperature, antioxidation, anticorrosion, increasing temperature fast, low coefficient of ...