ERW Karbon Çelik Boru Fabrikası

Tube Mill Production Process

The process begins with high-quality steel strips—either coil or sheet form—being steadily fed into the forming section of the machine. As the material moves forward, a carefully engineered series of forming rollers gradually shape it into a round tube profile, preparing it for welding without inducing excess stress or deformation. Next, the strip edges are welded using high-frequency induction welding, a clean and efficient method that creates a strong longitudinal weld without additional filler material. This welding process ensures seam structural integrity, making it suitable for demanding industrial applications. After seam welding, the tube undergoes sizing and straightening, where other rollers precisely calibrate the tube to the target dimensions and cross-sectional form—whether round, square, or rectangular. This ensures exceptional dimensional consistency and surface straightness. Once the shape is achieved, an automated Cutoff system cut the tube into pre-set lengths without stopping production, enabling high-speed, continuous output.

In order to solve the problem of pipe straightness, we innovatively selected 3 straightening Turkish heads and equipped them with 11-roller steel pipe straightening machines to control the straightness within 0.05%. We treat our products with almost rigorous technology.

For example, the 5-inch welded pipes for solar brackets provided by our company to NEXTRACKER customers in the United States use precise technology to ensure the perfection of the welds and the standard of the straightness of the steel pipes, which are recognized by customers.

Our equipment has been approved by Canada's CSA, and has passed international certifications such as CE and ISO, as well as laboratory-level requirements, waiting for customers to experience.

What are ERW tubes used for?

ERW TUBE are widely used in the construction field, transportation industry, automobile industry, solar energy and agricultural infrastructure construction. Such as building frames, scaffolding, safety fences, transportation of oil, natural gas, tap water, API conduit tube, API casing tubing, solar piles, furniture, greenhouse support frame and agricultural pipeline systems.