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What Is a High Frequency Welding Tube Mill?

Jan. 20, 2026

I. What Is a High Frequency Welding Tube Mill?


A High Frequency Welding Tube Mill, also known as a high frequency welded pipe mill, is a complete production line used for the continuous manufacturing of welded steel pipes.


The equipment uses steel strips (coils) as raw material and produces round pipes, square pipes, rectangular pipes, or special-shaped welded tubes through processes such as forming, welding, sizing, and cutting.


High frequency welding tube mill technology is widely applied in the production of ERW pipes (Electric Resistance Welded Pipes) and is recognized as one of the most mature and efficient welded pipe manufacturing processes in the steel pipe industry.


What Is a High Frequency Welding Tube Mill?


II. Working Principle of High Frequency Welding Tube Mill


The core of a high frequency welding tube mill lines in high frequency induction heating and resistance welding technology. The basic working process includes the following steps:


Uncoiling and Leveling


The steel coil is uncoiled and preliminarily leveled to provide stable raw material for the subsequent forming process.


Forming Section


The steel strip is gradually bent by multiple forming rolls, transforming from a flat strip into an open-round tube or profile.


High Frequency Welding


High frequency current is concentrated on the strip edges through induction or contact welding

The strip edges are rapidly heated to the welding temperature

Under the action of squeeze rolls, the two heated edges are fused together to form a solid weld seam


Inside and Outside Burr Removal


After welding, excess internal and external burrs are removed to improve the surface quality and inner wall finish of the pipe.


Sizing and Straightening


Sizing stands are used to ensure pipe dimensional accuracy and straightness.


Fixed-Length Cutting


The pipe is automatically cut to preset lengths to obtain finished welded steel pipes.


III. Features and Advantages of High Frequency Welding Tube Mill


1. High Welding Efficiency


Fast heating speed with high frequency welding

Suitable for continuous and automated production

High output per unit time, ideal for large-scale industrial production


2. Stable Weld Quality


Uniform weld seam with high strength

Dense weld structure and good mechanical properties

Meets the requirements of structural pipes and mechanical tubes


3. Relatively Low Production Cost


No welding wire or flux required

Controllable energy consumption and high material utilization

Suitable for long-term stable operation


4. Wide Range of Specifications


Capable of producing round, square, rectangular, and certain special-shaped pipes

Covers a wide range of pipe diameters and wall thicknesses


5. High Degree of Automation


Can be equipped with automatic control systems

Reduces manual intervention and improves production stability and consistency


IV. Application Range of High Frequency Welding Tube Mill


Welded steel pipes produced by high frequency welding tube mills are widely used in various industries, including:


Construction and Structural Applications


Scaffolding pipes

Structural steel tubes

Guardrails and support structures


Machinery and Manufacturing Industry


Mechanical structural tubes

Equipment frame pipes

Conveyor roller tubes


Automotive and Transportation Sector


Automotive structural components

Seat tubes and exhaust pipes

Traffic facility pipes


Energy and Pipeline Systems


Low-pressure fluid transportation pipes

Auxiliary pipelines for oil and natural gas

Agricultural irrigation pipes


Furniture and Daily-Use Products


Furniture steel tubes

Metal shelving

Fitness equipment tubes


V. Advantages of Aogang High Frequency Welding Tube Mill


As a professional tube mill manufacturer, Aogang has accumulated extensive project experience in the design, manufacturing, and delivery of high frequency welding tube mills, providing customers with stable and reliable solutions.


1. Mature Tube Mill Process Design Experience


With years of practical experience in ERW tube mills, Aogang can reasonably configure solutions according to different pipe applications (structural pipes, mechanical tubes, low-pressure fluid pipes), including:

Forming stand structure

High frequency welding system

Sizing and straightening solutions

This ensures a good balance between welding stability, forming accuracy, and product consistency.


2. Stable and Reliable Welding System Configuration


Aogang high frequency welding tube mills adopt proven high frequency welding technology solutions:

Concentrated welding energy with uniform seam heating

Stable welding process suitable for long-term continuous operation

Good weld strength and consistency

These systems meet production requirements for welded pipes with different diameters and wall thicknesses.


3. Strict Manufacturing and Assembly Standards


During the manufacturing process, Aogang focuses on machining and assembly precision of key components:

High-strength mill frames with stable operation

Controlled precision of forming rolls and key transmission components

Standardized assembly of welding and sizing sections to reduce vibration and deviation

This helps extend equipment service life and reduce long-term maintenance costs.


4. Customized Solutions


Aogang provides customized high frequency welding tube mill solutions based on customers’ actual production requirements, including:

Customized pipe diameter and wall thickness ranges

Production speed and automation configuration options

Solutions for round, square, and rectangular pipe production

This helps customers achieve a reasonable balance between investment cost, production capacity, and product positioning.


5. Complete Technical Support and Services


In addition to supplying the equipment itself, Aogang also provides:

Installation and commissioning support

Operation and maintenance training

Technical upgrades and spare parts support

These services help customers achieve stable production quickly and improve overall manufacturing efficiency.


High frequency welding tube mills are key equipment in welded steel pipe production.
With mature process design, stable welding systems, and standardized manufacturing practices, Aogang high frequency welding tube mills provide reliable and efficient welded pipe production solutions for a wide range of industrial applications.

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