Cr25Ni35 U-Shaped Radiant Tube for Industrial Furnaces Size: Ø124 × Ø108 × 1597 mm | High-Cr High-Ni Heat-Resistant Alloy | Custom Furnace Radiant Tube FH® Alloy manufactures Cr25Ni35 U-shaped radiant tubes for industrial furnaces and heat treatment equipment. This customized radiant tube is manufactured from Cr25Ni35 high-chromium, high-nickel heat-resistant alloy, with a tube size of Ø124 × Ø108 × 1597 mm (OD × ID × L). The U-shaped configuration provides a long radiant