Product use: Heating tubes for hot air are commonly used in places where static or flowing air is heated, such as air conditioning auxiliary heating, heating systems, oven drying equipment, hot air duct systems, textile machinery, generator sets, power equipment, etc., which require hot air heating or load aging. Fixed connection methods such as frames or threads can be used. Design and production parameters: outer tube diameter: Φ 3~Φ 25, sheath material: SUS304, SUS321, Incoloy840, Incoloy800 Surface treatment: polishing, borax, spraying, operating voltage: 220V, 220