The heart of our electric heating radiant tube is a sophisticated assembly of U-shaped, axially arranged end-welded resistance wires supported by robust ceramic frames. This design ensures efficient heat dissipation as there is no barrier between the inner core and the outer protective sleeve. Our radiant tubes boast a rated working temperature of 1000 degrees, utilizing resistance wires made from Cr20Ni80 or 0Cr21AI6Nb, allowing the surface to reach an impressive 1200 degrees. Crafted from high alumina ceramic, the support frame guarantees durability. The outer sleeve, a marvel of engineering, is a cold drawn seamless, thin-walled heat-resistant steel pipe made from 1Cr25Ni20Si2 or 1Cr25Ni35Si2, offering excellent resistance against high-temperature oxidation and carburization. Our design choices ensure a high safety factor, with an elevated rated temperature of 1200 degrees using 0Cr27AI7Mo2 resistance wire, capable of reaching 1400 degrees on the surface. When short-term demands arise, the tube withstands up to 1250 degrees, supported by durable steel jade porcelain. The protective sleeve, a feat of advanced metallurgy, is crafted from Fe Ni CrAI Re alloy, offering enduring performance at 1300 degrees Celsius in oxidizing environments and resisting oxidation at 1360 degrees for short periods. This makes our tubes ideal for high-temperature applications in low oxygen and sulfur-containing scenarios.
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