Inner Burr Removal Solutions for High-Frequency Welded Pipes

Efficient Internal Burr Removal for ERW Tube Mills 🔧

What is a Pipe Inner Scarfing Removal Device?

The Pipe Inner Scarfing Removal Device is a special tool used in ERW Tube Mill production lines to remove the internal weld bead (inside burr) generated during the high-frequency welding process.

During tube welding, molten metal is squeezed out at the weld seam, forming burrs both inside and outside the pipe. While the outer burr can be removed easily, the internal burr requires a dedicated scarfing tool installed inside the tube.

The inner scarfing device helps produce smoother inner pipe surfaces and improves product quality for applications that require clean internal dimensions and better fluid flow. 🚀

Where is it Used?

The inner scarfing device is commonly installed on:

✅ ERW Tube Mill Line
✅ High Frequency Welded Pipe Production Line
✅ Stainless Steel Tube Mill
✅ Carbon Steel Tube Mill
✅ Precision Tube Manufacturing Line

Typical applications include:

• Water pipes
• Furniture tubes
• Automotive tubes
• Heat exchanger tubes
• Structural pipes
• Mechanical tubing

Main Components

A standard Pipe Inner Scarfing Removal Device typically consists of:

• • Scarfing Tool Holder
• • Scarfing Insert / Cutting Tip
• • Ferrite core
• • Fix location plate

The cutting insert is usually made from wear-resistant materials to ensure long service life.

Working Principle ⚙️

After the strip is formed and welded, the pipe passes through the scarfing station.

The scarfing insert is positioned directly beneath the internal weld seam. As the tube moves forward continuously, the cutting edge removes the excess weld bead generated during welding.

Process Flow

Coil → Forming → HF Welding → Inner Burr Removal → Sizing → Cutting → Finished Pipe

Key advantages:

✔ Smooth internal surface
✔ Better pipe quality
✔ Improved dimensional accuracy
✔ Reduced flow resistance for fluid applications
✔ Enhanced downstream processing performance

Common Size Range

💡The suitable size depends on the tube mill specification and customer requirements.

Typical Wall Thickness

• 0.8 – 6.0 mm
• Customized according to tube specifications

Selection depends on:

• Pipe material
• Wall thickness
• Welding speed
• Production volume

Benefits of Using an Inner Scarfing Device ⭐

Better Internal Surface Quality

Removes the internal weld bead effectively.

Improved Product Value

Suitable for higher-quality tube applications.

Stable Production

Continuous operation with minimal interruption.

Longer Tool Life

Replaceable inserts reduce maintenance costs.

Higher Customer Satisfaction

Produces cleaner and more consistent tubes.

How to Select the Right Inner Scarfing Device?

Before choosing an inner burr removal system, consider:

🔹 Tube outside diameter range
🔹 Wall thickness range
🔹 Material grade (Carbon Steel / Stainless Steel)
🔹 Welding speed
🔹 Required internal surface quality
🔹 Existing tube mill specifications

Providing these parameters helps manufacturers recommend the most suitable solution.

FAQ

Q1: Why is internal burr removal necessary?

Internal weld beads may affect fluid flow, assembly accuracy, and product appearance. Removing the burr improves overall tube quality.

Q2: Can all ERW tubes use an inner scarfing device?

No. The pipe diameter and wall thickness must provide enough space for installing the scarfing mandrel and cutting insert inside the tube.

Q3: Does inner burr removal affect production speed?

Under proper adjustment, the scarfing process runs continuously and has minimal impact on line speed.

Q4: How often should the scarfing insert be replaced?

It depends on pipe material, production speed, and insert material. Carbide inserts generally offer longer service life than HSS inserts.

Q5: Can the device be retrofitted to an existing tube mill?

In many cases, yes. The feasibility depends on the tube mill design and available installation space.

Reliable Inner Scarfing Solutions for ERW Tube Mills 🔍

🌍AIS Machinery's Pipe Inner Scarfing Removal Devices have been exported to Russia,Southeast Asia and other countries, earning positive feedback from customers for their stable performance and effective burr removal.

Designed for various ERW tube mill applications, our scarfing tools offer easy adjustment, reliable operation, and long service life. We also provide technical support and customized solutions based on different tube specifications.

✔ Exported to multiple countries
✔ Stable burr removal performance
✔ Easy installation and adjustment
✔ Technical support available

📩 Contact AIS Machinery for a suitable inner scarfing solution for your tube mill.