Special-Shaped Bent Radiant Tube Material: SS400 | Size: 1053.9 × 1172 × 196 mm | Custom Fabricated for Industrial Furnace Systems FH® Alloy manufactures special-shaped bent radiant tubes for industrial furnace and heating equipment applications. This model is a custom fabricated bent radiant tube made from SS400, with an overall size of 1053.9 × 1172 × 196 mm. Compared with standard straight or U-shaped tubes, this type of radiant tube is designed with a more complex bent