The core of our electric heating radiant tube is ingeniously designed with axially arranged U-shaped resistance wires, welded at the ends and supported by ceramic frames. This innovative design ensures excellent heat dissipation as there's no shielding between the core and its protective sleeve. Crafted with precision, our radiant tube boasts a rated working temperature of 1000 degrees, utilizing Cr20Ni80 or 0Cr21AI6Nb for the resistance wire, with the surface temperature reaching 1200 degrees. Constructed from high alumina ceramic, the support frame is paired with an outer sleeve made from cold-drawn seamless thin-walled heat-resistant steel, 1Cr25Ni20Si2 or 1Cr25Ni35Si2. This remarkable material offers superior high-temperature oxidation resistance and significant carburization resistance. With a high safety factor, our design allows the rated working temperature to soar to 1200 degrees, with a resistance wire of 0Cr27AI7Mo2 achieving a surface temperature of 1400 degrees. The robust construction enables a maximum short-term operation at 1250 degrees, supported by steel jade porcelain frames and a protective sleeve of Fe Ni CrAI Re alloy, which sustains long-term operations at 1300 degrees Celsius in oxidizing conditions, with short-term resistance at 1360 degrees Celsius. Ideal for high-temperature, low oxygen, and sulfur-containing environments.
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