Hydrostatic Testing

The U.S. Department of Transportation (DOT) requires compressed gas cylinders to be tested every three, five, or ten years. The most common method is hydrostatic testing. State Cylinder has the authorization to perform visual and hydrostatic tests to keep your business on track.

Our Process

At State Cylinder, our trained and certified technicians inspect, test, and recertify steel, aluminum, and composite compressed gas cylinders in accordance with DOT requirements.


Our process starts with a visual inspection of the interior and exterior of your cylinder to check for damages and defects.

Pressure Testing

After inspection, our technicians begin hydrostatic testing. Your cylinder will be filled with water, secured to a testing head, and submerged inside a steel water jacket. Once sealed, the cylinder is pressurized to ensure it will not rupture when filled with compressed gas.


If all testing and inspection criteria are met, our technicians will recertify the cylinder using visible markings that include the month and year of the test and the facility where the cylinder was tested.

Why State Cylinder

Expert Technicians

At State Cylinder, our knowledgeable technicians have years of experience working with CO2 cylinders. We have the training and certifications needed to provide you with reliable cylinder services.


A Commitment to Safety

Our team puts safety first. We follow strict safety protocols for all of our services to keep your business moving forward.

Contact Our Team

Ready to get your cylinder recertified?
Reach out to State Cylinder today for hydrostatic testing and DOT recertification!