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What Is DOT 3AA?

Published in Gas Cylinders 1 min read

A DOT 3AA refers to a specific type of high-pressure gas cylinder widely used for various applications.

Understanding DOT 3AA Cylinders

According to regulations, a DOT-3AA cylinder is a seamless steel cylinder built to meet stringent standards set by the U.S. Department of Transportation (DOT).

Key characteristics defining a DOT 3AA cylinder, based on the reference, include:

  • Seamless Steel Construction: These cylinders are manufactured without seams, enhancing their strength and integrity under high pressure.
  • Water Capacity: They have a nominal water capacity of not over 1,000 pounds.
  • Service Pressure: They are designed for a minimum service pressure of at least 150 psig.

These specifications make DOT 3AA cylinders suitable for storing and transporting compressed gases like oxygen, nitrogen, argon, and others in various industries, including medical, welding, and industrial processes.

Using cylinders that meet the DOT 3AA standard ensures safety and compliance with transportation regulations for high-pressure gases.