If you only weld occasionally, whether for a workshop repair, a trailer, a gate or a small fabrication job, you may not want to sign a cylinder rental contract and pay a monthly standing charge for gas you only use in bursts.

That is exactly where a disposable welding gas cylinder is useful.

You buy it, use it and replace it, with no rental and no deposit.

This guide explains which gas suits which job, how to choose the right size and, importantly, when it makes sense to move from a disposable cylinder to a rent-free refillable bottle instead.

Which welding gas do you actually need?

Shielding gas keeps air away from the weld pool so the joint stays clean and strong.

The right gas depends on the welding process and the metal being used.

Argon-CO₂ mix is best for MIG welding mild and carbon steel. It is the everyday all-rounder, giving a stable arc, a tidy bead and low spatter. It is the most popular choice for general steel MIG welding.

Pure CO₂ is best for MIG welding steel on a budget or for thicker sections. It gives deeper penetration and a lower gas cost, but produces more spatter than an argon-CO₂ mix. It is a sound choice for heavier steel and value-focused work.

Pure argon is best for TIG welding all metals and MIG welding aluminium. It is essential for TIG and for non-ferrous MIG welding. Pure argon should not be used for MIG welding steel, as the arc suffers.

As a rule of thumb, use argon-CO₂ mix for steel MIG, pure CO₂ for budget or thicker steel MIG, and pure argon for TIG or aluminium.

Adams Gas stocks all three as disposable cylinders, including argon-CO₂, pure argon and pure CO₂, along with dedicated TIG welding gas.

What size cylinder do you need?

Adams Gas supplies disposable welding gas cylinders in two handy sizes.

Both use the common M10 x 1 RH thread, allowing them to pair with a standard disposable regulator.

The 0.95L cylinder is the compact option.

It is light, portable and ideal for occasional jobs, mobile work and tight spaces.

It is available as argon-CO₂ for MIG, pure argon for TIG and MIG, and pure CO₂ for MIG.

The 2.2L cylinder provides around 220 litres of gas.

It is the larger disposable option, giving fewer changeovers during longer sessions.

It is also available as argon-CO₂ for MIG, pure argon for TIG and MIG, and pure CO₂ for MIG.

How long a cylinder lasts depends on the gas flow rate, how much welding is being carried out and how draughty the working area is.

Treat the 2.2L cylinder as the better choice for longer runs, and the 0.95L cylinder as the grab-and-go option.

You will also need a matching MIG welding regulator and fittings to control the gas flow.

Disposable vs refillable: which is right for you?

This is the decision many guides skip.

Both options have their place. The right choice comes down to how much you weld.

Choose disposable cylinders if you weld occasionally, work on the move or want zero commitment.

There is no rental, no deposit and no contract. You simply pay for the cylinder, use it and replace it.

This makes disposable cylinders ideal for hobbyists, small workshops and anyone who values simplicity.

Step up to a refillable trade bottle once you are welding regularly.

Larger cylinders, such as 20L and 50L argon-CO₂ trade mixes, work out far better value per litre of gas for steady, higher-volume work.

The catch with larger bottles is usually the rental trap: a monthly standing charge that applies whether you weld or not.

Adams Gas takes a different approach.

Rent-free cylinders: pay for gas, not for holding the bottle

Plenty of welders are locked into cylinder rental agreements that quietly cost them all year round.

Adams Gas offers rent-free cylinder options, so you pay for the gas rather than a standing charge for keeping the bottle in the corner.

Combined with UK delivery and a nationwide stockist network, a refill or exchange is rarely far away, whether you run a single workbench or several sites.

Adams Gas is also an established welding gas supplier across Kent and beyond.

Welding safely with shielding gas

Whatever cylinder you choose, treat it with respect.

Keep cylinders upright and secured, fit the correct regulator for the gas and thread, check hoses and connections for leaks before you start, and always weld in a well-ventilated space away from anything flammable.

Follow the safety information supplied with each cylinder.

If a set-up does not look right, ask before striking an arc.

If your work also involves gas cutting or heating, Adams Gas also offers guidance on oxy-propane as an acetylene alternative.

Get set up with Adams Gas

Whether you need a single compact disposable cylinder or a rent-free trade bottle, Adams Gas has welding gas to match.

The range includes argon, argon-CO₂ and CO₂ in the right sizes, with suitable regulators available.

Browse MIG welding gas, find your nearest stockist or contact the Adams Gas team for advice on the right set-up.

If you run a trade counter or hire shop, you can also become an Adams Gas stockist and supply welding gas to your own customers.

Frequently asked questions

What gas do I need for MIG welding steel?

For MIG welding mild and carbon steel, an argon-CO₂ mix is the go-to choice.

It gives a stable arc, a clean bead and low spatter.

Pure CO₂ is a lower-cost alternative with deeper penetration, making it well suited to thicker steel, although it produces more spatter.

For TIG welding or MIG welding aluminium, you need pure argon instead.

Are disposable welding gas cylinders worth it?

For occasional, mobile or light welding, yes.

A disposable cylinder means no rental, no deposit and no contract, so you only pay when you need gas.

If you weld regularly, a refillable trade bottle works out better value per litre of gas.

With Adams Gas rent-free options, you get that value without a monthly standing charge.

What size disposable welding gas cylinder should I buy?

Adams Gas offers disposable welding gas cylinders in 0.95L and 2.2L sizes.

The 0.95L cylinder is compact and portable, making it ideal for occasional jobs.

The 2.2L cylinder provides around 220 litres of gas and is better for longer sessions with fewer changeovers.

Both use the standard M10 x 1 RH thread.

How long each cylinder lasts depends on your gas flow rate and how much you weld.

Can I use pure CO₂ instead of an argon mix for MIG welding?

Yes.

Pure CO₂ works for MIG welding steel and costs less.

It also gives deeper penetration, which suits thicker sections.

The trade-off is more spatter and a slightly harsher arc than an argon-CO₂ mix, so most welders prefer the mix for the cleanest finish on general steelwork.

Do I need a special regulator for a disposable welding gas cylinder?

Yes.

Disposable welding gas cylinders from Adams Gas use an M10 x 1 RH thread and need a matching disposable regulator to control the gas flow.

You can find suitable regulators and fittings in the MIG welding regulator range.

Ready to weld?

Compare disposable welding gas cylinders, step up to rent-free trade bottles, find your nearest stockist or contact the Adams Gas team.