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Bundles of low‑carbon and stainless‑steel tubes suitable for ENRX induction welding applications

Induction annealing and normalising

Induction annealing and normalizing is widely used in the tube and pipe industry and is ideal for virtually any annealing task.

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Induction heating explained
Induction heating used for seam normlizing of tube

What is induction annealing? 

Induction annealing heats metals that have already undergone significant processing. It reduces hardness, improves ductility and relieves internal stresses. Full-body annealing is a process where the complete workpiece is annealed. With seam annealing (more accurately known as seam normalising), only the heat-affected zone produced by the welding process is treated.

Brochure: Induction heating applications
ENRX induction heating system performing seam normalising on steel pipe during inline tube production

What are the benefits

Induction annealing and normalizing delivers:

  • Fast, reliable, and localised heat
  • Precise temperature control
  • Easy in-line integration

Induction treats individual workpieces to exact specifications, with control systems continuously monitoring and recording the entire process.

ENRX induction system performing seam normalising on a moving steel tube

Where is it used

Induction annealing and normalizing is widely used in the tube and pipe industry. It also anneals wire, steel strips, knife blades and copper tubing. In fact, induction is ideal for virtually any annealing task.
ENRX-Seam-normalizing-equipment

What equipment is available?

Each ENRX annealing system is built to satisfy specific requirements. At the heart of each system is an ENRX Sinac generator that features automatic load matching and a constant power factor at all power levels. Most of our delivered systems also feature custom-built handling and control solutions.

See what’s possible

  • Sinac: built for performance

    ENRX Sinac delivers high-frequency, high-precision induction heating for continuous operations. Built to heat, built to last. Even in the most demanding environments.

  • High-performance coil design

    Every ENRX solution starts with an advanced induction coil design. Engineered in-house to match your process, our coils deliver up to 98% energy efficiency and consistent quality.

  • Smarter service with IoT

    ENRX induction systems are IoT-ready—enabling remote diagnostics, fine-tuning, and predictive maintenance. Smarter service, better uptime, and long-term reliability.

  • Service beyond installation

    ENRX provides continuous support through coils, parts, maintenance and flexible service renting - ensuring maximum performance and uptime for your induction systems.

  • Heating challenges solved

    We simulate, test and solve with induction. ENRX combines digital modeling and lab verification to deliver precisely engineered heating performance for every application.

Insights and resources

Download brochures and expert materials on induction heating technologies and their industrial applications.

Induction heating a part to glowing red temperature

Induction heating applications – Processes, equipment and benefits

Discover how ENRX induction heating improves efficiency, precision, and sustainability across industrial applications — from brazing and bonding to forging and annealing. Learn about the processes, equipment, and benefits of modern induction technology.

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Get in touch

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