Preheating steel tubes

Induction preheating of steel tubes with diameters of 14mm, 16mm, and 42mm (0.55”, 0.63”, and 1.65”). A 50mm (2″) length of the tube much be heated to 900°C (1650°F) in under 30 seconds.

UPT W15/ 150 Power Supply 
HS-8 Heat Station

• Steel tubes with ODs: 14mm, 16mm and 42mm (0.55”, 0.63”, and 1.65”)
• Wall thicknesses: 1mm, 2mm, and 2mm (0.04″, 0.08″, 0.08″)

Key Parameters
Power: 5 kW for 42mm tube, 3 kW for 14 and 16 mm tubes
Temperature: 1740°F (950°C)
Time: 26 sec.


  1. Insert steel tube into the coil.
  2. Apply induction heat for 26 seconds.
  3. Remove the tube from the coil.


The desired preheating temperature was achieved for less than 30 seconds for the three different steel tubes. Our 5 kW induction system can be used for successfully preheating of steel tubes with different diameters and thicknesses.



Request information or contact us about this application. Reference info: Application Note 3464-4697