Our professional staff is ready to answer your cylinder testing and refurbishment questions.  


National Cylinder utilizes Ultrasonic testing, the most robust technologies, to test industrial sized cylinders. We have the ability to test cylinders without ever removing the valve, identifying pits, gouges, cracks, and corrosion.

We offer a variety of additional services and refurbishing techniques for these types of cylinders including paint removal and repainting, cylinder blasting, collar replacement.

Benefits Include

  • Quick Turnaround
  • No Valve Removal
  • No water introduced inside the cylinder
As an approved DOT testing and cylinder requalification facility, all cylinders are inspected visually and ultrasonically according to the approved requirements and held to the highest of safety standards. We utilize our state-of-the-art  testing facility allowing quick turnaround time and integrity of the product within the cylinders. Scheduled distribution services are available based on quantities.

Other Cylinders We off Re-certification for

Spec Gas

ISO Cylinder Requalification

  • UN ISO 7866
  • UN ISO 9809-1
  • UN ISO 9809-2
  • UN ISO 9809-3
  • UN ISO 11119-1
  • UN ISO 11119-2
  • UN ISO 11119-3