ERW Tube Mill Lines: HG20-HG610

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HG76 high frequency straight seam welded pipe production line

The HG76 ERW Pipe Making Machine is a flagship model in Great Wall’s ERW Tube Mill Lines (HG20-HG610), designed for medium-to-large diameter welded pipe production. With a 300KW high-frequency welding machine and 20-100m/min production speed, it delivers stable quality for round, square, and rectangular pipes – ideal for construction, automotive, API oil and gas, photovoltaic and plumbing industries that demand high-strength pipes.

  • Description
  • Production Process
  • Technical Parameters


Main Features of HG76 ERW Pipe Making Machine

  • High Frequency Welding: Delivers smooth, uniform weld seams with high precision and strength.

  • Quick Roll Change System: Minimizes downtime and improves production flexibility.

  • PLC & HMI Automation: Centralized control with digital adjustment of speed, cutting length, and welding parameters.

  • Energy Efficient Design: Optimized electrical system and low-resistance transmission reduce power consumption.

  • Versatile Applications: Suitable for round, square, and rectangular pipes, with optional forming modules.


FAQ – Common Questions About ERW Pipe Making Machine

Q:What is the difference between ERW and SAW pipe production?

A:ERW (Electric Resistance Welding) uses high frequency current to heat and join steel edges, ideal for smaller-diameter pipes with smooth seams. SAW uses submerged arc welding for larger pipes.

Q:Can the HG76 ERW line produce square or rectangular pipes?

A:Yes. With additional forming and sizing rolls, it can produce various shapes such as round, square, and rectangular tubes.

Q:Do you provide installation and training services?

A:Yes, we provide complete installation, commissioning, and operator training for all ERW tube mill lines.



Uncoiler:The starting unit of the HG76 ERW Pipe Making Machine- ensuring continuous material supply for the entire production line

Shearing and welding:A key efficiency-enhancing step for the ERW Pipe Making Machine – eliminating downtime and maintaining 20-100m/min production speed

Accumulator:Acts as a “material buffer” for the ERW Pipe Making Machine – ensuring the forming and welding sections run non-stop even during shearing/welding

Forming, high-frequency welding, external burr removal, cooling, sizing, rough straightening:The core working part of the HG76 ERW pipe machine - uses 300KW high-frequency energy to ensure a strong weld, remove burrs for a smooth surface, cool to stabilize the pipe structure, and meet the size requirements of φ25-φ76mm precision

Flying sawing cutting:A high-precision unit of the ERW Pipe Making Machine – it cuts finished pipes into 4-12m lengths (customizable) , matching the line’s production rhythm without slowing down

Roller after sawing

Inspection and collection

Packing

Weighing

Marking

Storage

Technical Specifications of HG76 ERW Tube Mill Line

Item nameTechnical Parameters
Raw materialLow carbon steel, low alloy steel, galvanized steel strip, high strength steel, etc.
Total powerAbout 500KVA
High frequency welding machine300KW
Roll weight≤3T
Round tubeφ25~φ76mm,Tube thickness: 0.8~3.5mm
Square tube15X 15~60X 60mm,Tube thickness: 0.8~3.5mm
Rectangular tube10x20~40x80mm,Tube thickness: 0.8~3.5mm
Tube mill speed20-100m/min
Tube length4-12m
Recommended plant dimension70m×18m×6m (≥6m; Distance from overhead crane track to ground)
(Customized design can be made according to the customer's workshop)

Why Choose HG76 ERW Pipe Making Machine? Parameter Advantages Explained

  • Wide material compatibility: Supports low carbon steel, low alloy steel, galvanized steel, and high-strength steel – the ERW Pipe Making Machine adapts to diverse production needs, no need to invest in separate equipment for different materials.

  • High power & efficiency: 300KW high-frequency welding machine + 20-100m/min speed – the ERW Pipe Making Machine ensures strong, stable welds while boosting daily output (up to 1000+ tons for φ50mm pipes), ideal for large-scale orders.

  • Versatile pipe production: Covers φ25-φ76mm round pipes, 15X15-60X60mm square pipes, and 10x20-40x80mm rectangular pipes – one ERW Pipe Making Machine replaces 2-3 single-spec lines, saving workshop space and labor costs.

  • Customizable workshop fit: Adapts to 70m×18m×6m or customer-specific factory sizes – the ERW Pipe Making Machine fits your existing layout, avoiding expensive workshop renovations.


ERW Pipe Making Machine

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