ENRX Weldac induction tube welding line installed in an industrial production facility
Induction Heating
Weldac – High-Output Solid-State Tub & Pipe Welders
A complete family of high-output solid-state induction welders for tube and pipe production, delivering high efficiency, compact design, and minimal operator intervention.
Manufactured byENRX
50–2200 kWPower range
60–500 kHzFrequency range
85–87%Efficiency
0.95Power factor
5 yearsInverter warranty
Overview
Solid-state welders for tube mills
Weldac is ENRX family of high-output solid-state tube and pipe welders, covering power outputs from 50 kW to 2200 kW with a frequency range of 60–500 kHz. It is a complete system consisting of a diode rectifier, inverter modules, output section, busbar and operator control system.
The system offers extremely high efficiency (85–87%) from rectifier input to coil output), low cooling water consumption, and a constant high-power factor (0.95) at all power levels. Its modular design gives a compact footprint, simplifies integration into tube mills, and allows one-cabinet solutions up to 1000 kW.
Weldac is engineered for maximum uptime using continuous electronic load matching, automatically adjusting to different tube diameters and eliminating manual tuning. The system supports a wide range of options including positioning tables, heat exchangers, auto-transformers, welding monitoring systems, impeders, coils and more.
Applications
Where Weldac is used
ENRX Weldac induction coil heating steel tube during longitudinal welding process
ENRX Weldac high-output induction tube welder in operation on a production line
Longitudinal tube and pipe welding (steel tube mills)
Stainless steel, carbon steel and non-ferrous tube production
High-speed welding lines requiring stable power delivery
Retrofitting of older generation welders
Applications demanding fast coil changes and automatic load matching
Features
Power, matching and design
- Power range 50–2200 kW; frequency range 60–500 kHz
- Modular compact design; one-cabinet 1000 kW solution
- Extremely easy operation with automatic frequency adjustment
- Continuous electronic load matching for full power across tube sizes
- High efficiency: 85–87% rectifier-to-coil
- High power factor (0.95) using diode rectifier
- Wide range of optional accessories
- Eco-friendly low water consumption
- Short-circuit-proof and safe design
- 5-year warranty on inverter modules and driver cards
Benefits
More uptime, lower running cost
More uptime thanks to automatic matching and solid-state reliability
Higher throughput due to fast coil changes and optimized welding speed
Lower operating costs from high efficiency and low water use
Reduced operator error due to simple control panel
Easily integrates into new or existing tube mills
Long-term reliability with global service support
Need support with this product?
Share your application and process requirements, and our Thermal Process Solutions team will support you with the suitable product information.
Other Products in Induction Heating
Explore other products available within the same product category and open each page for complete technical details.
Sinac® – Stationary Induction Heating Systems
A stationary induction heating system delivering precise, contactless, efficient and repeatable heat for a wide range of industrial applications.
MINAC – Mobile Induction Heating Systems – all-in-one-solution
A fully digital, mobile, flexible induction heating system equipped for Industry 4.0, offering precise, efficient heating for a wide range of applications.
HardLine – Industrial Heat Treatment Systems
A comprehensive family of induction heat treatment systems for surface and through hardening, ranging from small manual units to large, automated turnkey plants.
Ventac – Portable Air-Cooled Induction Heating System
A compact, portable, air-cooled induction heating system designed for preheating, post-weld heat treatment, and maintenance applications in shrink-fitting and demanding industrial environments.
HardLine M – Modular Vertical Hardening Machine
A new-generation modular vertical induction hardening system offering maximum flexibility, Industry 4.0 readiness, and suitability for a wide range of hardening and tempering applications.
Wire and Cable Heating Systems
High-efficiency in-line induction heating systems for structural wires, cables, conductors, and optical fiber production.
Induction Bonding System
A high-precision induction bonding system used for curing adhesives and sealants in automotive aluminium and steel panel assemblies.
Induction Heating Coils
A new-generation modular vertical induction hardening system offering maximum flexibility, Industry 4.0 readiness, and suitability for a wide range of hardening and tempering applications.
Tube Welding Consumables
A comprehensive range of high-performance consumables for high-frequency tube, pipe, and profile welding applications.
TERAC 25/40 – Deck and Bulkhead Straightening System
A turnkey induction heating system designed for shipyards, ideal for straightening steel decks and bulkheads with high productivity, low cost, and safe operation.
Shrink-Fitting System – Electrical Motors & Pumps
Induction heating system designed for fast, precise and safe shrink-fitting of bearings, rotors, impellers, and pump components.
Seam Normalizing Systems
Induction-based seam normalizing systems designed for longitudinally welded pipes, providing precise, controllable and efficient heat treatment for oil and gas pipe production.
Railway Induction Heating Systems
Advanced induction heating solutions for maintenance, repair and manufacturing operations across the railway industry.
Induction Metal Melting Furnaces – FIB / DAB / FIM / LAB / FAR
Induction furnaces designed for clean, efficient, and precise melting of ferrous and non-ferrous metals, suitable for small to mid-size foundries and laboratories.
Induction Brazing System
A comprehensive induction brazing technology offering fast, precise, clean and repeatable joining for a wide range of metals and industrial applications.
Induction Brazing System for Short-Circuit Rings
A high-precision induction brazing solution designed to braze short-circuit rings with minimal heat input, high accuracy and outstanding joint quality.
Induction Brazing System for Faucets
A high-precision, flame-free induction brazing solution designed to deliver efficient, repeatable and aesthetically clean brazed joints for faucet manufacturing.
HardLine – Vertical Heat Treatment Machines (VS / VM / VL / VXL)
A range of vertical induction heat treatment machines designed for small to very large components, featuring CNC control, modular design, and high productivity.
HardLine Horizontal Heat Treatment Machines – HC / HP / HH Series
High-productivity, modular horizontal induction heat treatment systems designed for bars and shafts, offering continuous, pusher, and hybrid machine configurations.
Coating Removal System
An induction heating system designed for fast, clean, and safe removal of paint and industrial coatings, reducing stripping time by up to 90% compared to traditional methods.
Chain Heat Treatment System
An in-line induction hardening and tempering system designed to produce premium-grade industrial chain with high speed, precision and consistency.
Bolt Expansion System
An induction-based system for fast, safe and precise expansion of bolts used in turbines and heavy-duty assemblies.
Billet Heating Systems
Induction billet heating systems are designed to rapidly and efficiently heat billets of various metals before forging.
Bar End & Partial Heating Systems – CBB (Horizontal) & CHV (Vertical)
Induction heating systems are designed for bar end and partial heating with high speed, precision, and automation capability.