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How is our tubing manufactured?

Updated: Jun 19

At OGMAN, it's important for us that our customers understand how stainless steel tubing is produced, specially, for the pharmaceutical and food industries.

The tubing commonly used in the pharmaceutical and food industries is manufactured from stainless steel rolls, which serve as the raw material for the tube.

To create it, the ends of the sheet are joined using an electric arc welding process or laser beam.

In more technical terms, the longitudinal edges are joined together using an electric arc welding process or laser beam welding, without the addition of material, in an inert gas atmosphere.

It is important to mention that if the equipment, material, and parameters are suitable, the smoothness of the surface of the weld, both exterior and interior, can be very close to the sanitary concept.

At this stage, the tubing meets with the basic processes outlined in ASTM A778 and ASTM A554 standards.

Once the tube is mechanically polished, it is easy to mistake it for a seamless tube because the weld is difficult to detect visually.

It is recommended that after welding, a seamed tube undergoes a heat treatment such as annealing because the welding process alters the original metallographic structure of the stainless steel sheet.

With seamed tube, it is necessary to chemically clean the surface through a pickling process, to ensure that it complies with the necessary standards for use in the pharmaceutical and food industries.

All our tubing meets these standards, as we aim to provide our customers with the highest quality products.

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