Welding / Gas Bottles

Keep the flame burning in your welding tools with the full range of gas bottles from Sydney Tools.

Whether you’re looking for argon, propane, butane, acetylene or oxygen bottles, you’ll find what you need right here from the big brands like Bromic, Hot Devil, SpeedGas, and Bernzomatic.

If you’ve run low, Sydney Tools makes it easy with our SPEEDSWAP system. Simply bring your empty cylinder to one of our 30+ locations across Australia, including Sydney, Melbourne, or Brisbane, and we’ll take it and replace it with a full one.

Need more than just gas? We also carry a huge range of welding supplies, including torches, gas detectors, regulators, safety gear and more—everything you need to get set up or keep going.

How to check your gas bottle level

Not sure how much gas remains in your bottle? There’s a couple of ways to find out.

Check the markings on the exterior to find the weight of the empty bottle, then put your gas bottle on some scales to see how much it weighs. If the weight is close to the empty weight, it’s almost time to replace the bottle.

Another way to test is using warm water. Fill up a jug or bucket with warm/hot (NOT boiling) water, and pour it slowly down the exterior of the gas bottle, ideally when the gas is in use. Check the temperature of the water as it goes down the bottle, it will be cold where the gas is and warm where the bottle is empty.

What type of gas do I need? The different types of welding gases

Different welding types require different types of gas. If you’re new to welding or just not sure which kind of gas you need, we’ve got you covered.

Some of the most commonly used gases in welding are argon, carbon dioxide (CO2), compressed air, oxygen and acetylene. You’ll also find blends such as argon with carbon dioxide.

MIG welding usually requires carbon dioxide or a blend of argon and CO2.

Argon is the most popular choice of gas for TIG welding.

Acetylene is often combined with oxygen and yields a very hot flame that’s suitable for cutting and welding most types of metals.

Hunting for a bargain? Be sure to head to our clearance page to find the sharpest prices on trade-quality tools.

Frequently Asked Questions (FAQs)

What sizes of gas bottles are available at Sydney Tools?

We stock a range of sizes, from small disposable canisters to larger refillable bottles used in workshops and on job sites.

Are the gas bottles pre-filled or empty?

Most of our gas bottles are sold pre-filled and ready to use, but you can also purchase empty bottles and fill them through the SPEEDSWAP system at selected locations.

Can I get my gas bottle refilled at Sydney Tools?

Yes. Our SPEEDSWAP system lets you return an empty SpeedGas cylinder and receive a full one on the spot at participating stores.

What appliances can I use a gas bottle with?

Our gas bottles are suitable for welding torches, brazing tools, camping stoves, BBQs, heaters, and other gas-powered gear—just make sure the gas type and connection match the appliance.

Are the gas bottles safe to transport and store?

Yes, when transported upright and secured properly, gas bottles are safe to move. Always store them in a well-ventilated area, away from heat or open flames.

Do the bottles meet Australian safety regulations?

All gas bottles we sell meet current Australian safety standards and are labelled with compliance markings.

How do I safely connect and disconnect a gas bottle?

Always work in a well-ventilated area. Make sure valves are off before connecting or disconnecting. Use the correct regulator and tighten fittings firmly by hand or with a suitable tool. If you smell gas, shut everything down and check all fittings.

Can I use these gas bottles for camping and caravanning?

Yes, we stock smaller gas cylinders and disposable bottles that are perfect for portable stoves, lanterns and heaters commonly used in camping and caravans.

Do you sell gas bottle accessories or regulators?

We do. You’ll find a full range of regulators, hoses, gas detectors, and fittings to suit your welding or heating setup.

Keep your setup ready to go

Whether you're working in a pro workshop or firing up a torch for a quick weld, we've got the gas bottles and gear to keep you going.

Shop online or visit your nearest Sydney Tools store to find the right gas, the right size, and the right setup, all backed by expert advice and everyday low prices.