All Safe Global is proud to offer the most complete range of cylinder requalification ND testing services Including DOT recertification, refurbishment, and customizations services available anywhere.
We are one of the largest DOT-certified testing facilities in the country and offer extensive reconditioning and customization services as well, for full-range, efficient, business-oriented cylinder service.
With more than 40 years of experience in the compressed gas industry, legendary attention to detail and unmatched technical expertise, All Safe Global is your trusted partner and the only choice for superior requalification and other cylinder services.
Ultrasonic Examination (UE) and Hydrostatic Cylinder Testing
All Safe offers cylinder inspection services using Ultrasonic Examination (UE) and Hydrostatic testing for gas cylinder recertification.
Hydrostatic testing and ultrasonic examinations are the industry-standard methods of re-qualifying/re-certifying compressed and packaged gas cylinders. This testing determines whether a cylinder is safe for continued use, and is required by the U.S. Department of Transportation for refrigerant cylinders, SCUBA and SCBA tanks, aircraft cylinders, fire extinguishers, beverage (CO2 and CO2/nitrogen mix) cylinders, and virtually all other common compressed gas cylinders—oxygen, argon, helium, nitrogen, hydrogen, air, nitrous oxide, and many others.
The process involves in-depth visual examinations of both the interior and exterior of the cylinder, along with a water pressure test or ultrasonic exam to confirm pressure-holding ability. Each requalification is recorded with a date and the retester’s identification marked on the cylinder; our guide explains how to read DOT cylinder markings.
All Safe Global is also proud to offer ultrasonic cylinder examination. This advanced method does not require valve removal for testing, making it ideal for specialty gas cylinder recertification. Ultrasonic examination is highly recommended for cylinders used in precision welding, specialty gas mix cylinders, ultra-high purity inert gas cylinders, and where high-value gas needs to be preserved.
Our DOT-certified cylinder service center provides unmatched quality and accuracy in gas cylinder testing, delivering safety, performance, and peace of mind with every cylinder you test.
Alumifurb
Short for “aluminum refurbishment,” this exclusive testing and refurbishing process transforms aluminum cylinders to look like new.
Alumifurb is an extremely cost-effective approach to buying new cylinders. We hydrostatically test each cylinder, remove any labels, buff it free of the old clear coat, repaint shoulders as needed and in the correct color for the application, and finish with a fresh, durable clear-coat. You get a cylinder in like-new condition for a fraction of the price.
Keg, Cylinder, and Growler Customization
Promote your brand and identify your property with custom labeling and identification for cylinders, kegs, and growlers.
All Safe can imprint your logo, message, or graphics in high quality on any of the above. Silk screen, wrap, stencil, stamp, adhesive label, or emboss: the choice is yours.
Custom neck rings are also available for cylinders.
Cylinder Exterior Blasting and Painting
For cylinders that are structurally sound but need cosmetic improvement, All Safe offers cylinder blasting and painting.
Our cylinder blasting machines remove all paint, scale, and exterior contaminants from the tank. The new, clean cylinder is then ready for our application of tough new paint.
Cylinder Requalification
Propane cylinders are required to be requalified 10 years after the original manufacture date and every 5 years thereafter. All Safe Global can test and re-certify any size of propane/LPG cylinder, as well as blasting and repainting tanks for a new, durable, and great-looking finish.
In addition to propane requalification, our cylinder testing and inspection services can also aid in oxygen tank and gas recertifications.
CO2 Cylinder Filling
All Safe Global offers CO2 cylinder-filling services for most sizes of DOT-rated portable tanks, including fire extinguishers and paintball cylinders. We fill with the highest grade of CO2 suitable for beverage dispensing, medical applications, welding, industrial applications, and paintball to our wholesale customers. Contact us to learn more about pricing and minimum order quantities.
CO2 Cylinder Rental
All Safe Global rents full cylinders and fire extinguishers for special effects, industrial use, event safety, and other uses. Below are some of the cylinders we rent; contact us if you need a different cylinder.
Fire extinguishers • CO2 cylinders • Nitrogen cylinders • Oxygen cylinders • Propane tanks • Helium cylinders • Breathing air cylinders • Cylinder carts
FREQUENTLY ASKED QUESTIONS
What cylinder services does All Safe Global provide for compressed gas cylinders?
All Safe Global provides cylinder inspection, hydrostatic testing, ultrasonic examination, refurbishment, blasting and painting, customization, recycling, filling, and rental services.
These services support the full lifecycle of compressed gas cylinders used in industrial gas distribution, beverage dispensing, propane supply, and medical oxygen systems. Testing and requalification services help ensure cylinders remain compliant with DOT transportation regulations and safe for continued use.
Distributors and fleet operators often combine multiple services during scheduled maintenance cycles. For example, a cylinder may be tested, refurbished, repainted, and relabeled before returning to service, extending asset life while maintaining regulatory compliance.
What is ultrasonic cylinder examination and when is it used instead of hydrostatic testing?
Ultrasonic cylinder examination is a non-destructive testing method that uses sound waves to measure wall thickness and detect structural defects in high-pressure cylinders.
Unlike hydrostatic testing, which pressurizes a cylinder with water to evaluate expansion, ultrasonic examination scans the cylinder wall to identify corrosion, thinning, or flaws without filling the cylinder. This process is commonly used for certain steel cylinders approved under DOT special permits.
For gas distributors and cylinder fleet managers, ultrasonic examination can reduce downtime, simplify handling, and provide precise measurement data for asset tracking and compliance documentation.
How often do compressed gas cylinders need to be hydrostatically tested?
Most DOT cylinders must undergo hydrostatic testing every 5 or 10 years depending on cylinder type, specification, and service.
Hydrostatic testing verifies the structural integrity of a cylinder by pressurizing it with water and measuring permanent expansion. This process confirms that the cylinder can safely withstand normal operating pressures during transportation and use.
Industrial gas distributors, propane suppliers, and beverage equipment providers rely on regular hydrostatic testing schedules to maintain compliance with DOT regulations and ensure cylinders remain safe for filling and distribution.
What is AlumiFurb aluminum cylinder refurbishment?
AlumiFurb is a specialized aluminum cylinder refurbishment process that restores the appearance and protective finish of aluminum cylinders.
The process typically includes surface preparation, cosmetic restoration, and finishing treatments designed to extend the usable life of aluminum cylinders. This is particularly valuable for CO₂ and beverage cylinders that experience heavy handling in commercial environments.
For distributors and beverage brands managing large cylinder fleets, refurbishment reduces replacement costs while keeping cylinders presentable and operationally reliable.
Can cylinders, kegs, or growlers be customized with branding or finishes?
Yes, cylinders, kegs, and growlers can be customized with branded finishes, coatings, and visual identification elements.
Customization services allow beverage brands, breweries, coffee companies, and distributors to apply unique colors, coatings, or markings that reinforce brand identity and simplify asset tracking. These finishes can also improve durability in high-use environments.
Customized cylinders and kegs are commonly used in craft beverage programs, nitro coffee distribution, and promotional beverage systems where visual branding and differentiation are important.
Why is cylinder blasting and painting important for cylinder maintenance?
Cylinder blasting and painting remove corrosion and restore protective coatings that prevent further surface damage.
Over time, cylinders used in industrial, propane, and beverage environments can accumulate rust, worn paint, or environmental contamination. Blasting removes damaged coatings while repainting restores the protective finish.
Maintaining proper surface coatings improves corrosion resistance, preserves cylinder identification markings, and helps ensure cylinders remain safe and visually compliant for transport and use.
What is propane tank requalification and why is it required?
Propane tank requalification is the process of inspecting and testing a propane cylinder to verify that it remains safe for continued use and transportation.
DOT regulations require propane cylinders to be periodically inspected and requalified after their initial certification period expires. This inspection may include visual inspection, hydrostatic testing, or other approved evaluation methods depending on cylinder type.
Propane distributors and refill stations rely on requalification services to maintain regulatory compliance and keep their cylinder inventory legally refillable and transportable.
What happens during cylinder recycling?
Cylinder recycling safely removes damaged or expired cylinders from service and processes the materials for recovery or disposal.
When cylinders reach the end of their service life or fail inspection, they must be permanently removed from circulation to prevent unsafe reuse. Recycling programs typically include depressurization, valve removal, and metal recovery.
For gas distributors and fleet managers, responsible recycling ensures regulatory compliance while recovering material value from retired cylinders.
Who typically needs CO₂ cylinder filling services?
CO₂ cylinder filling services are commonly used by beverage distributors, breweries, coffee companies, restaurants, and industrial gas suppliers.
These organizations rely on carbon dioxide for beverage carbonation, draft beer dispensing, nitro coffee systems, welding applications, and various industrial processes. Regular filling services ensure cylinders remain ready for operational use.
Businesses operating draft beverage systems or production facilities often maintain rotating cylinder inventories that require frequent refill and testing services.
When does CO₂ cylinder rental make more sense than owning cylinders?
CO₂ cylinder rental is often preferred when businesses need flexible inventory without managing long-term cylinder ownership or maintenance.
Rental programs can simplify logistics for companies with fluctuating demand, seasonal beverage programs, or temporary installations. The service provider typically handles inspection, requalification, and maintenance requirements.
Restaurants, event operators, breweries, and beverage distributors often use rental programs to maintain reliable gas supply while avoiding the operational burden of managing a large cylinder fleet.
