Nitrogen gas kit, comes with cylinder, regulator and hose, available Australia wide, in D & C size.
Call us on 0404 677 187
STEP 1 - BUY YOUR CYLINDER
STEP 2 - USE YOUR GAS
STEP 3 - GET CHEAP REFILLS
No Cylinder Rental – No Contracts
Rentfreegas is a Gas company based in Sydney NSW that sells cylinders, gas and equipment on a rent-free and delivery free basis. We specialise in Argon, Mig gas, Oxygen, Nitrogen, Carbon Dioxide and Helium. We supply Speedgas cylinders as well as regulators, high pressure hoses, fittings and other accessories. With over 20 years in the industrial gas industry we can help you not only save money on rental, but help you make specific gas mixtures and source gases internationally.
We aim to provide great service to all customers and if we cannot help you point you in the right direction to get the support you need.
Own your cylinder!
Call to talk to us now – 0404 677 187
| New & Full Bottle | C | D | E | G |
| Argon | $200 | $299 | $430 | $599 |
| Argon 5/2 | $200 | $299 | $430 | $599 |
| Nitrogen | $200 | $300 | $430 | $569 |
| CO2 | $200 | $340 | n/a | $599 |
| Oxygen | $200 | $270 | $429 | $599 |
| Helium | $210 | $360 | $460 | n/a |
| REFILL Bottle | ||||
| Argon | $70 | $100 | $150 | $199 |
| Argon 5/2 | $70 | $100 | $150 | $199 |
| Nitrogen | $70 | $85 | $130 | $160 |
| CO2 | $70 | $85 | n/a | $120 |
| Oxygen | $70 | $100 | $129 | $180 |
| Helium | $70 | $110 | $150 | n/a |
| Delivery free Sydney | ||||
How does a rent free welding gas bottle work?
You’re a welding business that uses a lot of gas, and you’ve been renting your bottles for years. But, with rental prices escalating, you’re now beginning to wonder if there’s a more cost-effective solution. The good news is that you can now buy a rent free welding gas bottle, and save. How does it work? You’ll firstly buy the ideal type of gas cylinder for your needs in a size that is the most economical for your use. Gas cylinder types are varied, but the most common are Argon, Co2, Helium, Nitrogen and Oxygen. Sizes typically range from 20 kilograms up to 95 kilograms in weight. And we also have the C size which is 6 kilograms full of gas. These rent free gas bottles are full at the time of purchase and delivered to your door. Once you’ve used your gas, and you’re nearing the end of your bottle, you’ll then contact your gas supplier and order a refill. Your refill will then be delivered to you as soon as possible. Do all gas bottles come in the same sizes? The size of rent free welding gas bottles varies depending on the type of gas you are purchasing. Argon gas and Argon 5-2 gas (for MIG welding) cylinders come in volumes of 0.6m3, 1.7m3, 4.0m3 and 8.7m3, as does Oxygen. Nitrogen, however, comes only in 0.6m3, 1.7m3 and 8.7m3 volumes and Helium in 0.5m3, 1.3m3 and 3.4m3 volumes. CO2 gas is available in 1.8kg, 6 kilograms, 22kg and 31-kilogram volumes. How does the cost of a rent free welding gas bottle compare to renting? The initial outlay to buy your rent free welding gas bottles is more expensive than renting gas cylinders. However, you will only need to purchase your gas bottles once, as they have a lifespan of 10 or more years. The cost to then refill your rent free welding gas bottles after you’ve used the gas is minimal, compared to the rental charge [...]
Types of rent free welding gas bottles available
There are many different types of rent free welding gas bottles that are on the market. Some of the most common are Argon, MIG gas, Nitrogen, CO2, hydrogen, helium, and oxygen, as well as propane. These gases can be used by themselves, or may be mixed with other gases to use on various materials. Types of rent free welding gas bottles Argon, Oxygen and Co2, as well as Helium and Nitrogen gas, are available in rent free welding gas bottles. These gases can be used to weld many material types. Argon Argon gas, which is colourless and odourless, is used in the casting industry to flush defects from molten materials. When used in metal fabrication, this gas generates an inert gas shield. When blended with Co2, Helium and Oxygen, Argon enhances the characteristics of the welding arc. Oxygen This gas is also colourless and odourless. Oxygen supports welding cutting operations when added to other shielding gases, and can be mixed with plasma cutting gases to use on carbon based steels. CO2 Mostly used with Argon gas, Co2 is a shield gas ideal for welding. This gas can be utilised in a vapour state to prevent the atmospheric contamination of molten metals during the arc welding process. Helium Helium is a nontoxic and inert gas. As such, this gas is non-flammable and has high heat conductivity, making it ideal for inert gas shield creation. Helium also prevents oxidation when welding aluminium, copper, and stainless steel, as well as magnesium alloys. Nitrogen This gas in its pure form is used for tube welding, particularly stainless steel. Nitrogen also increases the capabilities of plasma cutting and heat treatment. When added to Argon, Nitrogen can be used in gas metal arc welding, also known as MIG welding. Rent Free Gas can supply you with Argon gas cylinders, Oxygen and Co2, along with Nitrogen and Helium gas cylinders. So, no matter what type of materials you’re looking to weld, we [...]
A wide world of uses for cheap helium tanks
Did you know that helium is the second most abundant element in the entire atmosphere? That fact alone may not be much use to you, but when it is pressurised and put into helium cylinders, like the ones you can buy from Rent Free Gas, helium is not only colourless, odourless, non-corrosive, non-toxic and non-combustible, it’s also very handy for industry and your DIY projects. Here’s a few ways to put your cheap helium tanks to good use: 1. Balloons The most obvious use for your cheap helium tanks is to keep children happy at birthday parties by having colourful floating balloons all around the party. The balloons float because helium is the second lightest known gas. 2. Coolant Because helium can be cooled below its critical temperature without condensing into a solid, it is useful in the area of cryogenics. While that may be the case, it’s unlikely you’ll be using your cheap helium tanks bought from Rentfree gas to make superfluid helium for superconducting, quantum computing or x-ray crystallography – but you never know! 3. Welding Helium is one of the noble gases that is commonly used as an affordable inert gas for welding, acting as a shielding agent against oxygen and water. 4. Detecting leaks A lesser-known use for your cheap helium tanks is for detecting leaks. It is a good tracer gas not just because it is relatively inexpensive for this application, non-toxic and non-flammable, but because its small atomic size means helium escapes through the tiniest of gaps. 5. Growing crystal Another major use for cheap helium tanks is to create a controlled atmosphere for a range of chemical processes, one of the biggest ones being growing crystal. This was even done by a group of Japanese scientists at zero gravity! 6. Lasers Again, it’s unlikely you will use your own cheap helium tanks for creating the sort of lasers that are used for barcode reading, but this element is used extensively [...]
Rent free welding gas for your next welding project
Argon Welding is a breeze with Sydney based Rent Free Gas, as we listened to what you want and don’t charge for delivery or rental. If you need argon to complete your project, get your rent free welding gas bottles from Rent Free Gas and you will own rather than rent your cylinder. Argon is used in both Mig and Tig welding, due to it being an inert gas it is ideal for operating as a shielding gas. Argon protectively shields the electric arc from contaminants, but other rent free welding gas bottles that are also helpful for your welding projects and solutions are helium and CO2. Oxygen Rent Free Gas also has your rent free welding gas bottles for your oxygen welding projects. Oxy-acetylene welding is one of the fundamental welding techniques, burning with an intense and focused flame. To complete your project you will need your very own welding gas bottles containing oxygen bought from Rent Free Gas. CO2 If you are going to complete a Mig welding project, one of Rentfreegas’ rent free welding gas bottles containing CO2 will more than certainly be on your shopping list. That’s because carbon dioxide is the most common reactive gas used for this kind of welding, because it can be used in its very useful 100% form that doesn’t require the use of an additional inert gas. Rent free welding gas bottles for Mig welding are also inexpensive when welding with CO2, so keep your costs low by turning to Rent Free Gas. Helium Rent Free Gas wants to give you the best rent free welding gas bottles as well as the best welding tips, so take our advice and do your aluminium welding with a pure Argon. You can also purchase a 50-50 mix of argon and helium which is good for Aluminium welding, but it is more expensive due to high helium content. If you find your aluminium welding difficult, add a rent free welding gas bottle full of helium to the recipe and [...]
Why helium gas can be a health hazard
Helium gas is a naturally forming element in our solar system and has many uses outside of balloons, including as aircraft and spacecraft fuel and inside technology, including quantum computers and medical equipment, such as MRI machines. Balloons are a must-have party item all over Australia, but can be an expensive option. Using the DIY method and purchasing a cheap helium gas cylinder can cut your costs and provide you with cheap helium gas balloons. Unfortunately, there are some risks associated with helium balloons at parties that are not widely known in Australia. The dangers of inhaling helium gas Popular media often depicts characters inhaling from balloons to get laughs. Inhaling helium gas can change the way your voice sounds as sound can travel almost twice as fast through helium gas as it can through normal air, making you sound like a cartoon character. Party-goers around the world regularly inhale helium to achieve the same effect, and in doing so can unknowingly put their lives at risk. Helium can displace oxygen in your body and cause asphyxiation. Helium gas works in the same way as water does in your lungs when you drown, and even a few seconds of oxygen deprivation can cause serious side effects, including permanent brain damage. Lowering the oxygen concentration in your body by just 18% can be fatal. Inhalation of helium gas can also rupture air sacs in your lungs and cause helium bubbles in your arteries that can travel into your brain or heart causing instant death. Over 75 deaths in Australia between 2005 and 2009 can be directly attributed to the inhalation of helium. Medical risks Medical professionals are concerned about the risks that this simple party trick can pose to unwitting people. Steps are being taken in conjunction with the gas industry in Australia to minimise the deaths caused by inhalation of helium gas. Rent Free Gas is concerned about the misuse of helium, however it is not [...]
Why are the world’s nitrogen sales so high?
Nitrogen sales throughout the world are higher than you might imagine, with this abundant chemical element being a crucial component to life on earth. It’s found not just in many everyday situations, but in every single living thing, with nitrogen sales not limited to usage in foods, fertilisers, poisons and explosives. Nitrogen uses across different industries Nitrogen is used in many industries, with this naturally occurring, extremely abundant, colourless and odourless component also coming in a liquid form which looks similar to water. Many nitrogen uses relate to the production of ammonia, which accounts for most of the world’s manufacturing of various fertilisers. Nitrogen is also used in the production of refrigerant gases, the manufacture of plastics and textiles, and in cleaning solutions used in households across the world. Food production Through the production of fertilisers, nitrogen sales also contribute directly to the world’s production of crops and food. Nitrogen has important health benefits, too, as almost all pharmacological drugs contain this substance. Nitrogen is also used by the health industry in the form of nitrous oxide as an anaesthetic, while in the gas form it helps to conserve egg, blood and sperm specimens. Nitrogen gas is also used to help respiratory patients, in a combination with oxygen to make it healthy to breathe. Computer industries also contribute to the world’s nitrogen sales, as microchips utilise it for cooling. Entertainment & military uses Entertainment also contributes to nitrogen sales, as most paintball guns are now powered by this gas rather than carbon dioxide. And nitrogen sales also keep high performance motor racing and aircraft tyres on track and performing to their highest standard. Nitrogen is also connected with the military, with some aircraft fuel systems utilising it, while it is also commonly used in steel production. Nitrogen sales makes good sense Most nitrogen sales are connected with industry use. It is very effective in destroying toxic liquids and vapours, and as a catalyst, a bleaching agent and rocket [...]