Induction heating for tube and pipe manufacturing
Induction heating is used throughout tube and pipe production, from high-speed longitudinal welding to seam normalising, annealing and the heating steps around coating and welding. ENRX builds the machines for each step, from Weldac tube welders to Sinac and Minac systems, with a full range of coils and consumables.
Why induction heating for tube and pipe production
- Built for continuous production: high-throughput welding and heat treatment that keep tube lines running
- Wide material range: low-carbon steel, stainless steel, high-strength steel and aluminium tube
- Easy to integrate: compact, modular machines for new mills and for retrofits into existing lines
- Low energy use: high-efficiency systems that keep running costs down
- One supplier: welders, seam normalising, heating systems, coils and consumables from the same source
Longitudinal tube welding
Seam normalising and annealing
- Seam annealing of longitudinal tube welds
- Full-body annealing of magnetic and non-magnetic tube products
- Horizontal tracking systems position the induction coil above the pipe and follow the weld seam with a purpose-built tracking camera
- Designed to work with ENRX power sources, coils and handling mechanisms
ENRX supplies seam normalising solutions for complete tube processing.
Pre-heating
- Pre-heating of pipe before coating
- Pre-heating of pipe before coating removal and repair
- Pre-heating of tubes before TIG welding
- Pre-heating of tube ends before flowforming
Mobile systems cover on-site work and stationary systems cover production lines.
Post-heating
- Post-weld heat treatment of pipe welds
- Post-heating of pipe coatings
Brazing
- Brazing of heat transfer tubing
Coating removal and repair
- Heating of pipe coatings for removal and repair, using ENRX’s mobile coating removal system
Coils and consumables
Related products
Weldac®: Tube welders
Weldac is our family of high-output solid-state induction welders for continuous tube and pipe production, with 85–95% efficiency from rectifier to coil
Seam normalising system
Induction systems for normalising the weld seam on longitudinally welded pipe, with automatic coil tracking, defect detection and coil protection built in.
Welder consumables
Impeders, ferrite cores, coils, casings and scarfing tools for high-frequency tube and pipe welding
Minac®: Mobile induction heating equipment
Minac is our family of mobile induction heating equipment for brazing, curing, hardening, shrink-fitting and straightening, in the workshop or on site
Sinac®: Stationary induction heating systems
Sinac is our family of stationary, universal heat generator systems, customised with coils, cables and cooling to fit your heating process
Ventac: Air-cooled induction heating system
Ventac is our portable air-cooled induction heating system that combines high continuous output with small size and low weight
Coating removal system
Mobile induction heating system that loosens paint and coatings from steel without a flame, for fast, controlled removal in the workshop and in the field.
Frequently asked questions
Image gallery
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Automated induction longitudinal welding is a reliable, high-throughput process.
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One of our horisontal tracking seam normalising systems. The induction coils are positioned above the pipe, and track the seam with the help of a specially designed tracking camera.
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ENRX seam normalising systems are easy to control. They are specially designed to work with ENRX power sources, coils and handling mechanisms.
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Weldac’s automatic load matching ensures full output power across a wide range of tube sizes. There are no “unsafe” operating areas. When a different-sized coil is fitted, Weldac automatically matches to the best setting.
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The low power consumption and high efficiency of ENRX welding systems reduces costs.
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Ferrite for high-frequency tube welding.
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ENRX offer a full range of consumables, including coils, ferrite, impeders, and tube scarfing equipment.
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The high-speed throughput and reliability of induction welding make it perfect for the tube and pipe industry
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Weldac's efficiency from input at the rectifier to output at the coil is 85-95%.
