Compressed Gas Cylinder Sizes

Compressed gas is invaluable to many operations – both at home and across various industries. Of course, you can probably guess that the amount needed in a large-scale business production is going to be far greater than that needed to keep a residential water heater running. The good news is that gas can be compressed, and “bottled,” into the size specific to your situation. 

Not sure what size that would be? We’re here to help.

Common Uses for Compressed Gases

Compressed gas cylinders were first invented and used way back in 1880, becoming a major part of the medical field. Shortly after, several companies joined the business of “bottling” various gases. One such company includes Air Liquide. Founded in Paris in 1902, Air Liquide is now one of the largest world suppliers of compressed gases, serving industries such as healthcare, construction and engineering, electronics, and more. 

The compressed gases that are widely distributed include propane, nitrogen, chlorine, helium, carbon dioxide, acetylene, and oxygen. They each serve different functions and industries. It is likely that one of the main compressed gases you will be working with, especially at home, is propane. 

Before we jump into the sizing, here are some of the many ways compressed gases (and particularly propane) can be used – both at the home level and the industrial level.


  • BBQ Grills
  • Water Heaters
  • Fireplace
  • Stove
  • Clothes Dryer
  • Lighting Fixtures


  • Propane-Powered Forklifts and Other Small Vehicles
  • Large Operational Appliances
  • Nuclear Power Production
  • Oil & Gas
  • Pharmaceuticals
  • Creation of Foods
  • Water
  • Mining
  • Steelmaking
  • Welding

Common Compressed Gas Cylinder Sizes

Gas cylinders are sized by the amount of liquid they hold or by their weight. You may be wondering what size you need for your specific situation. Here are the most common cylinder sizes. 

  • 20-Pound: This is likely the size you’ve seen the most, especially if you’re a fan of firing up the grill on summer nights. This size is easily portable and also services appliances like patio heaters and mosquito catchers. 
  • 33-Pound: This size is often used in a construction setting. It is often used on propane-powered forklifts and various small vehicles. 100-Pound:
  • The 100-pound cylinder is often used residentially and services many household appliances. It is also used for gas-powered fireplaces, stoves, and clothes dryers.
  • 500/1000 Gallon Tanks: Quite the tank size jump, right? This size is often used for heating an entire home or for powering large appliances. It is also used in small commercial businesses for various functions. 
  • 30,000 Gallon Giant: This definitely isn’t a size you’re going to find hanging out in somebody’s backyard (although that would be quite the BBQ!) This “Giant” is found in propane storage facilities or large industrial sites. It can also be found in certain housing communities that share one common gas source. 

Unless you’re running quite a large business operation, it’s likely you’ll be sticking with one of the smaller, portable compressed gas cylinders. 

For more detailed information on the several specialty gas cylinder sizes and specs that are available to fit your needs, here’s a detailed chart that will help. 

Compressed Gas Cylinder Chart

Cylinder Sizes and Safe Temperature Regulation

When the temperature drops, maintaining optimal pressure in a liquefied gas cylinder can be incredibly difficult. Cold external temperatures prevent the liquid from vaporizing, which makes your gas cylinders unusable because of low pressure

No matter what specialty gas you use – and regardless of the size you need – it is important to keep safety practices at the forefront of your mind. If your high-pressure cylinders are handled roughly or allowed to reach high temperatures without proper regulation, they are at risk of exploding without warning. 

Whether your cylinder is large or small, the effects of an explosion can be devastating. 

Because compressed gases can be a huge hazard if not handled properly, it is absolutely essential that you carefully regulate the temperature where it is stored. Your safety, and the safety of those around you, depend upon it.

One of the easiest, most effective ways to safely regulate the temperature of your high-pressure cylinders is with a safe, dry heating source applied directly to the tank. 

Choose a Powerblanket Propane Tank Heater

Powerblanket specializes in safely heating gas delivery systems for homes and businesses alike. When it comes to gas temperature regulation, we are always here to help. 

Here at Powerblanket, we offer a variety of gas cylinder heating options, with sizing to fit any tank you have with exactness. Our gas cylinder heaters provide a uniform barrier of heat across the entire cylinder. Our top priorities for our customers are always safety and heating efficiency. 

No matter what size, we have propane tank heaters that will cover it. 

Here are some top reasons to choose a Powerblanket cylinder heater:

  • Increase performance and efficiency of gas cylinders
  • Save money by optimizing gas and material usage
  • Provide even heat distribution
  • Reduce cylinder refills in cold temperatures
  • Safety certified to UL and CSA standards

Give our expert Powerblanket team a call at 866.945.4203 today.

Learn More Here

Product Spotlight: Gas Cylinder Heaters

Do you store gas in cylinders? If so, then you know how the cold can affect them, even during this mild winter. In order to keep your storage from being compromised by a drop in temperature, you need a solution that can both insulate and heat. This is where Powerblanket® Gas Cylinder Heaters come into play.


Pressure and Depletion

Let’s face it, this is one of the mildest winters North America has seen in a very long time, but that doesn’t mean that it isn’t getting cold enough to affect equipment and resources left out in the dropping temperatures, even though they aren’t dropping as low as usual. As far as gas storage goes, if you’re storing it in gas cylinders, you’re likely keeping it outside, and if it’s outside, it’s going to lose pressure—causing depletion and problems with extraction.

When you store pressurized gas in cold temperatures, or any temperature below ideal, then the pressure in your tank is going to be far less than efficient. This is simply due to the molecules of gas moving closer together, just like in your car’s tires. And of course, as the molecules move closer together, the pressure drastically drops. This means when it comes time for extracting the gas from your tank or cylinder, you’re going to run into troubles; it’s going to seem like there isn’t as much gas in there.


Powerblanket® Gas Cylinder Heaters

Powerblanket® Gas Cylinder Heaters solve this problem by adding a protective barrier that both insulates and heats your tank or cylinder to the ideal temperature needed for optimal pressure maintenance. Powerblanket offers a range of gas cylinder heaters equipped for maintaining temperatures of propane, butane, nitrogen, oxygen, and other compressed gases. Powerblanket® Gas Cylinder Heaters offer uniform heat distribution across the entire cylinder. This revolutionary heating solution reduces costs by optimizing container temperatures and increasing cylinder efficiency.

What’s more, the Powerblanket® product line is designed for any heating job. Every product is built using a rugged vinyl shell that is safe to use in temperatures as low as -20° F. So in other words, Powerblanket products can keep your equipment protected well below freezing.


Standout Features

  • Increases performance and efficiency of gas cylinders
  • Provides even heat distribution
  • Saves money by optimizing gas and material usage
  • Safety certified by UL/CSA/CE
  • Eliminates unnecessary cylinder refills in cold weather



Welding Preheating

Welding Preheating

Prepping pipes and other surfaces for welding can be a real challenge since metal surfaces often need to be hot before you begin. If the metal isn’t hot enough before you start welding, it will affect the cooling rate. If a weld cools too quickly, the metal could go into shock and cause fabrication hydrogen cracking. There are many metal preheating methods. Some of these include: furnace heating, torching, electrical strip heaters, induction heating, and radiation heating, and welding preheat blankets.

Why Preheat Metal?

When you preheat and post-heat the metal, it allows for better hydrogen diffusion; up to 1000 times more diffusion at 250 °F (121 °C) than at room temperature (68 °F, 20 °C). Cracking risks reduce as more hydrogen diffuses after the weld is complete.

man in helmet welding pipes

Types of Heat Transfer

There are 3 main types of heat transfer: convection, radiation, and conduction. All 3 methods are useful in different applications. Let’s take a closer look.


Convection transfers heat around a space by the movement of molecules. For example, the rolling circular motion within a pot of boiling water is convection heating.


Radiation is the transfer of heat through electromagnetic radiation. Radiant heating is what you can feel in the air when you sit around a campfire.


Conduction transfers heat through direct surface contact. This is the most efficient heat transfer method to use when preheating a wide variety of metal surfaces for welding. Radiant heat will waste time and energy heating the air around the metal instead of the metal itself. Direct contact will ensure even, consistent heat over the surface of your welding materials.

Let’s compare 2 different welding preheating methods. Induction heating using radiation and heating blankets using conduction.

Induction Heating vs. Heating Blankets

Induction heating involves coiling a conductive metal object around the surface or container that needs to be heated. Electromagnetic currents then circulate and heat the object they surround. Once these metal coils are in place, they are not easy to remove and re-install. Induction heating is well suited for objects needing continual applied heat in a fixed, controlled location. Induction is commonly used in factories, where long strips of piping are continuously fed through the center of inductive heating coils.

However, for field work welding and on site repairs, induction is not a practical solution, especially in colder weather. Welding in a dynamic environment requires more portable and flexible preheating options. High temperature heating blankets are flexible enough to conform to and heat any metal in need of welding. They also use conductive heating that evenly distributes across the entire metal surface.

Powerblanket diagram on heat transfer in heating blankets

Welding preheat blankets are easily installed, removed, stored, and placed in another welding location.

Powerblanket Welding Preheating Solutions

High Temperature Heating Blankets

Powerblanket specializes in innovative heating solutions that fit a wide variety of surface shapes, and can be used in a myriad of locations. Our portable heating blankets come in every shape and size to accommodate any welding job.

Powerblanket diagram showing even heat distribution in our heating blankets blankets

Thick insulation and efficient heating spreading technology drive heat downward into your welding surface, eliminating hot and cold spots.

At Powerblanket, we also provide heating blankets that are certified to be used within hazardous locations. Safely preheat metals in C1D2 locations, so you can weld wherever needed.

Gas Cylinder Heaters

Our gas cylinder heaters and propane tank heaters are the perfect fit for tank welding jobs. With a large selection of sizes available, Powerblanket can fit and preheat any sized tank, even when welding in the coldest of conditions.

Contact us to find the perfect preheating solution for your welding needs at 866.945.4203 or [email protected]