P-Type Radiant Tub e for Industrial Furnaces Custom P-Shaped Radiant Tube | Heat-Resistant Alloy Furnace Tube Manufacturer | FH® Alloy FH® Alloy manufactures P-type radiant tubes for industrial furnaces and heat treatment equipment, providing customized solutions according to furnace layout, heating system design, operating temperature, atmosphere, and customer drawings. The P-shaped configuration combines long straight radiant sections with a return section, allowing the