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Meet MIVI at Tube China 2026 in Shanghai, September 21–24. Discuss ERW tube mills, custom rollers and consumables. Request a meeting with our team.

Learn how to reduce pipe scrap rate in ERW tube mills by reducing weld defects, improving forming precision, stabilizing speed, and controlling raw material quality.

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Why are ERW pipes scratched after production?

Learn the causes including tube mill roller damage, poor polishing, roll design problems and machine adjustment issues, with practical solutions for tube manufacturers.

Learn how steel strip quality problems—including carbon fluctuation, phosphorus segregation, strip edge burrs and inclusions—cause weld defects, flattening test cracks and hydro test failures in ERW tube production. Discover inspection methods and practical solutions.

Learn how ERW squeeze force affects weld quality, welding stability, and tube mill performance. Discover causes of weld defects and optimization solutions.

Learn how squeeze roller wear affects ERW welding quality, causes weld defects, and how to optimize squeeze force, welding power, and roll maintenance for stable tube production.

High frequency welding problems in ERW tube mills are often linked to overheating, underheating, arc instability, and oxide inclusion. Learn the real causes, inspection methods, troubleshooting steps, and proven solutions used by experienced manufacturers.