Skip to content Skip to main navigation Skip to search
Tube and pipe induction welder

Weldac

EFD Induction has the most comprehensive range of solutions for the tube and pipe industry. Weldac is a proven solution for welding stainless steel, aluminum, low-carbon steel and high-strength steel and is possibly the world's best induction welder.
Close

High-output solid-state welders

  • More output: Continuous electronic load matching secures full power output across a wide range of tube sizes.
  • More uptime: Short-circuit-proof, safe and reliable operation.
  • Unrivalled efficiency: Diode rectifier with a constant power factor of 0.95 at all power levels, and an efficiency factor of 85-87%.
  • Eco and energy friendly: High efficiency saves energy and reduces cooling water consumption.
  • Easy to operate: An easy-to-use control panel with a minimum of manual settings makes the Weldac extremely easy to operate.
  • Wide range of power sizes: From 50 kW up to 2200 kW. A frequency range of 60-500 kHz.
  • Modern modular design: The small, compact footprint saves valuable floor-space and simplifies in-line integration. Up to 1100 kW available in a one-cabinet solution.
  • Complete system: Consisting of a diode rectifier, ­inverter modules, output section, busbar and operator control system.
  • Unmatched warranty: Five-year warranty on Weldac inverter modules and driver cards.
  • Full range of consumables:  Coils, ferrite, impeders and tube scarfing equipment.

Learn more

Induction heating - tube and pipe welding
Weldac - High-output, solid-state welders

Weldac is EFD Induction’s family of high-output, solid-state tube and pipe welders. The Weldac family covers a wide range of power sizes; from 50 kW up to 2200 kW. and a frequency range of 60-500 kHz.

Download brochures

Videos

Induction welding

Induction welding is used in the tube and pipe industry for the longitudinal welding of stainless steel (magnetic and non-magnetic), aluminum, low-carbon and high-strength low-alloy (HSLA) steels and many other conductive materials.

Images

Induction heating - tube and pipe welding

The first welder in the world with 1000 kW in a single cabinet solution. EFD Induction has always been at the forefront in developing equipment with the best power-to-volume ratio.

Induction heating - tube and pipe welding

Double cabinet welder. The Weldac family covers a wide range of power sizes—from 50 kW up to 2200 kW.

Induction heating - tube and pipe welding

Coil changes take only seconds, with the frequency adjusting automatically to each tube dimension.

Induction heating - tube and pipe welding

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.

Induction heating - tube and pipe welding

Automated induction longitudinal welding is a reliable, high-throughput process

Induction heating - tube and pipe welding

Weldac’s efficiency from input at the rectifier to output at the coil is 85-87%.

Induction heating - tube and pipe welding

Weldac can be fitted with various induction coils or with quick-lifting contact heads.

Induction heating - tube and pipe welding

The low power consumption and high efficiency of EFD Induction welding systems reduce costs.

Induction heating - tube and pipe welding

The high-speed throughput and reliability of induction welding makes it perfect for the tube and pipe industry.

Induction heating - tube and pipe welding

Ferrite for high-frequency tube welding

Induction heating - tube and pipe welding

We offer a full range of consumables including coils, ferrite, impeders and tube scarfing equipment.

Technical Articles

Maximising output in high-frequency tube and pipe welding

The authors evaluate the parameters that influence welder performance and scrap production during changeover in the high-frequency tube and pipe welding process.

Maximizing uptime in high-frequency tube and-pipe welding

This article explains some basic principles of solid-state welder design that are crucial for maintaining operation under various conditions.

New high-frequency converter for induction heating

This paper presents a new high-frequency-converter for induction heating. The converter has a diode rectifier and automatic matching.

Weld setup, variable frequency and heat affected zones in high frequency tube and pipe welding

The article investigates the impact that geometrical changes in the weld zone have on weld frequency and the Heat Affected Zone (HAZ).

News