Steel Tubes Manufacturer & ERW Tube Supplier UK

Electric Resistance Welded (ERW) tube is a type of steel tubing manufactured by fusing the edges of a steel strip using high-frequency electrical current. The result is a strong, seamless-looking tube with excellent dimensional accuracy and a smooth internal surface. At Top Tubes, our ERW tubes are produced in-house using state-of-the-art mills, ensuring high strength, consistent quality, and cost-efficiency across every batch.
Learn more about the ERW tube manufacturing process.

ERW tubing is relied on across a wide spectrum of industries. In automotive manufacturing, it’s used in components such as exhaust systems and frames. In construction, it forms part of structural frameworks and supports. Its strength-to-weight ratio and precise finish also make it ideal for renewable energy installations, furniture, and agricultural equipment.
How ERW tubes support performance across sectors.

The process begins with a steel coil being unrolled, flattened, and formed into a tube shape. Using high-frequency current, the edges are heated and forged together under pressure, forming a clean, continuous weld. At Top Tubes, our ERW mills are designed for speed, precision, and consistency, enabling large-scale production without compromising on quality.
Explore the full ERW tube manufacturing process here.

An internal weld seam is the raised line formed inside a tube where the steel edges have been joined. While necessary in manufacturing, it can cause friction or contamination in specific applications. That’s why we often remove this seam through a process known as internal fin cutting, ensuring a smoother internal surface that supports optimal performance in hydraulic systems, medical tubing, and beyond.
Discover why internal seam removal matters.

Tube fin cutting is the process of removing the internal weld bead from inside an ERW tube. This step improves fluid dynamics and cleanliness within the tube, particularly useful in precision-critical sectors like automotive or hydraulic systems. At Top Tubes, this optional process is available where your specification demands an enhanced internal finish.
Read more about our tube weld seam removal process.

ERW tubes offer key benefits:

• Precision and consistency – Ideal for high-spec applications like vehicle components or architectural frameworks
• Smooth internal surfaces – Promotes cleaner flow in fluid systems
• Cost-efficiency – Reduced waste, fast production, and long service life lower overall project costs

At Top Tubes, quality control is at the core of our ERW tube manufacturing. Every tube we produce undergoes rigorous testing—including tensile, flattening, impact, expansion, and non-destructive weld tests—to ensure the highest standards of strength, durability, and reliability. We even conduct visual inspections to check for any surface or weld defects. If a single seam fails, we scrap the batch and recheck all tolerances. That’s how we guarantee consistency—without compromise.

Top Tubes delivers ERW tubes that meet strict tolerances without inflating your budget.
See more advantages of using ERW Tube

An ERW tube mill is a facility where flat steel is formed into cylindrical tubes and welded using electric resistance. Our advanced mills at Top Tubes allow us to create tubing to exacting standards, with minimal waste and high repeatability. This technology supports both bulk manufacturing and specialist tube production for niche applications.
Explore our ERW Tube Mill capabilities.