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GGP Solid State High Frequency Welder for ERW Tube Mill Line

The GGP Solid State High Frequency Welder is one of the most critical components in an ERW (Electric Resistance Welded) Tube Mill Line. It provides the high-frequency electrical energy required to heat and weld the edges of steel strip continuously, ensuring strong and reliable weld seams for steel pipes and tubes.

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Product Details

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Specification

GGP Solid State High Frequency Welder for ERW Tube Mill Line

Overview

Over the past decade, Chinese solid-state high-frequency welding technology has developed rapidly and gained worldwide recognition. Modern HF welders now incorporate advanced semiconductor technologies such as IGBT modules and Silicon Carbide (SiC) devices, significantly improving energy efficiency, welding stability, and operating reliability while reducing power consumption and maintenance costs.

The GGP HF Welder is designed for high-speed pipe production and is suitable for carbon steel, galvanized steel, stainless steel, and various special steel tube manufacturing applications.

Working Principle

The solid-state high-frequency welder converts three-phase AC power into high-frequency electrical energy through advanced rectification and inverter systems.

The generated high-frequency current flows through the induction coil or contact welding system, concentrating heat at the strip edges. Under the pressure of squeeze rolls, the heated edges are forged together to form a high-quality continuous weld.

Main Design Types

1. Parallel Resonance Design

The parallel resonance structure is widely adopted in modern Chinese HF welders.

Advantages

High conversion efficiency
Excellent power factor
Lower operating temperature
Easier maintenance
Reduced energy consumption
Better suitability for high-speed production

Applications

Carbon steel pipe production
Structural tubing
Water pipes
Furniture tubes
Automotive tubing

SiC high frequency welder

2. Series Resonance Design

The series resonance structure is commonly used by some European manufacturers.

Advantages

Stable output under varying loads
Strong anti-interference capability
Excellent welding consistency

Applications

Precision tube production
High-end industrial tube manufacturing
Special alloy tube production

Both designs have proven performance in the global tube manufacturing industry and can be selected according to customer requirements.

Key Features

Advanced IGBT Technology

High-performance IGBT modules ensure:

Fast switching speed
Stable frequency output
High reliability
Reduced maintenance

Optional SiC Technology

Latest Silicon Carbide technology offers:

Lower switching losses
Higher energy efficiency
Reduced heat generation
Smaller equipment footprint
Longer component life

Intelligent Digital Control

Real-time monitoring
Automatic fault diagnosis
Easy parameter adjustment
User-friendly HMI interface

Energy Saving Design

Compared with traditional vacuum tube welders, the GGP solid-state HF welder can reduce energy consumption by 20%–40%.

High Reliability

Industrial-grade components
Robust cooling system
Continuous 24-hour operation capability

Technical Specifications

Item	Specification
Input Voltage	380V / 415V / 440V / Custom
Input Frequency	50Hz / 60Hz
Output Frequency	100kHz – 500kHz
Power Range	100kW – 1200kW
Cooling Method	Water Cooling
Control System	PLC + HMI
Semiconductor Device	IGBT / Optional SiC
Power Factor	≥0.95
Efficiency	Up to 92%–96%
Protection Level	IP54

Suitable Tube Sizes

The GGP HF Welder can be matched with various ERW tube mills:

Small Tube Mills

Diameter: 10 mm – 50 mm
Power: 100 kW – 300 kW

Medium Tube Mills

Diameter: 50 mm – 127 mm
Power: 300 kW – 600 kW

Large Tube Mills

Diameter: 127 mm – 325 mm
Power: 600 kW – 1200 kW

Applications

The GGP Solid State HF Welder is widely used in:

ERW Steel Pipe Production Lines
Structural Tube Manufacturing
Water Pipe Production
Oil & Gas Pipe Manufacturing
Furniture Tube Production
Automotive Tubing
Greenhouse Pipe Production
Construction Pipe Manufacturing
Solar Structure Tube Production

Advantages Compared with Vacuum Tube Welders

Solid State HF Welder	Vacuum Tube Welder
Higher Efficiency	Lower Efficiency
Lower Energy Consumption	Higher Energy Consumption
Less Maintenance	Frequent Maintenance
Smaller Footprint	Larger Footprint
Longer Service Life	Shorter Service Life
Stable Output	Output Fluctuation
Digital Control	Analog Control

Standard Configuration

Rectifier Cabinet
Inverter Cabinet
Control Cabinet
Water Cooling System
Output Transformer
Induction Coil Assembly
Protection System
PLC Control System
Operator Interface

Frequently Asked Questions (FAQ)

Q1: What is the role of the HF welder in an ERW tube mill?

The HF welder generates high-frequency electrical energy to heat and weld the strip edges together, forming a continuous welded tube.

Q2: Which is better, parallel resonance or series resonance?

Both designs are reliable. Parallel resonance systems generally offer higher efficiency and lower operating costs, while series resonance systems may provide stronger load adaptability in certain applications.

Q3: What is the benefit of SiC technology?

SiC devices significantly reduce switching losses, improve efficiency, decrease heat generation, and extend equipment lifespan.

Q4: Can the welder be integrated into existing tube mills?

Yes. The GGP HF Welder can be integrated with most ERW tube mill brands and configurations.

Q5: How much energy can be saved compared with traditional vacuum tube welders?

Depending on production conditions, energy savings typically range from 20% to 40%.

Q6: Do you provide installation and technical support?

Yes. We provide commissioning, training, online support, spare parts supply, and long-term technical assistance.

Why Choose GGP Solid State HF Welder?

With advanced IGBT and optional SiC technology, intelligent control systems, high conversion efficiency, and proven reliability, the GGP Solid State High Frequency Welder delivers superior welding performance for modern ERW tube manufacturing.

Whether you are building a new tube mill or upgrading an existing production line, GGP provides a cost-effective, energy-efficient, and future-ready welding solution.

RELATION EQUIPMENT

We provides all equipment to tube mill entry section:

Coil Car

Single And Double Heads Un-coiler & Hydraulic And Pneumatic Un-coiler

Peeler and hold down roll arm

Flattening Machine

Automatic and Semi Auto Shearer & Butt Welder

Vertical Cage Accumulator & Horizontal Loop Accumulator & Landing Horizontal Spiral Loop Accumulator

disc accumulator to storage strip

erw tube mill feeding section

OUR SERVICE

Why Choose Us?

Leading Technology, Reliable Quality, Excellent Service!

Optimized Design, High quality material select!

Heat treatment process guarantee!

Spiral bevel gear, drum gear coupling and carburization.

Gear teeth quenching.

Driven system stable, efficient and wearable with lower noise.

High precision wear resisting and Long life of rollers.

All the machine Lathes, Key Grooves are positioned and Milled by CNC.

ais machinery exhibition attend

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FAQ – SiC HF Welder

Is SiC HF welding technology mature?

Yes. SiC HF welding technology is fully mature and has been widely applied in industrial ERW tube mills, with many units already operating reliably in continuous production.

What is the main advantage of SiC HF compared with Si HF?

SiC HF offers higher electrical efficiency, better power factor, lower harmonic current, and more stable welding power, resulting in consistent weld quality and lower operating costs.

Can SiC HF replace an existing Si HF welder?

Yes. In most cases, SiC HF welders can be used as a direct upgrade or replacement for conventional Si-based HF systems, with minimal changes to the existing tube mill.

Does SiC HF require special maintenance?

No. SiC HF welders generally require less maintenance due to lower thermal stress and improved system stability.

Is SiC HF suitable for long-term continuous production?

Yes. SiC HF welders are designed for continuous operation and are well suited for high-duty ERW tube mill production lines.

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