1800 STARGAS (1800 782 742)
Reviewed by Richard Fowles, MSc (Eng) Welding Engineering, Metallurgy and Materials Engineering
Fellow of the Institute of Engineers Australia
Gas Cylinder Colour Code Chart
The gas cylinder colour code is indicative of the gas contained in the cylinder.
The gas cylinder colour code chart is designed to provide an instant visual cue identifying the contents for practical and safety reasons.
For example, what colour is oxygen cylinder, without the cylinder colour code someone could accidentally misidentify a cylinder and give a medical patient an inert gas instead of oxygen, which could cause Inert Gas Asphyxiation.
Breathing any inert gas, like helium (Brown), nitrogen (Pewter) or argon (Peacock Blue), creates a dangerous absence of oxygen.
This could even be fatal. The gas cylinder colour code helps prevent this.
The gas cylinder colour codes also help prevent fuel gas (like acetylene) accidents that could result in fire or explosion.
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Quote offer SG50 when placing your first gas order
Valid 1 November 2025, expiring 31 October 2028
This chart shows the Australian standard gas cylinder color code and gas characteristics for gas cylinders:
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| Gas Cylinder Colour Codes for Australia |
| Carbon Dioxide (CO2) gas cylinder colour code is: Green Grey |
| Nitrogen gas cylinder colour code is: Pewter |
| Argon gas cylinder colour code is: Peacock Blue |
| Helium gas cylinder colour code is: Brown |
| LPG gas cylinder colour code is: Silver, Light Grey or Galvanised |
| Acetylene gas cylinder colour code is: Claret |
| Hydrogen gas cylinder colour code is: Signal Red |
| Oxygen gas cylinder colour code is: Black |
FAQ of Gas Cylinder Colour Codes for Australia
What colour are acetylene cylinders? What colour is an acetylene cylinder?
Whether it’s gas welding acetylene cylinder colour, acetylene gas cylinder colour, acetylene bottle colour, or acetylene cylinder colour, acetylene colour is Claret.
What is colour of argon cylinder?
Want to know colour of argon cylinder, argon bottle colour, argon gas colour, colour of argon gas, argon cylinder colour, argon gas bottle colour, or argon gas cylinder colour?
Argon cylinder colour is Peacock Blue.
What is CO2 gas cylinder colour?
Whether it’s CO2 gas cylinder colour, colour of co2 cylinder, or CO2 cylinder colour code, CO2 cylinder colour is Green Grey.
What is helium gas cylinder colour?
Helium gas cylinder colour or helium cylinder colour is Brown.
What is colour of nitrogen cylinder?
The colour of nitrogen cylinder, nitrogen cylinder colour, nitrogen colour code, nitrogen bottle colour, or nitrogen cylinder colour code is Pewter.
What colour are oxygen cylinders? What colour is an oxygen cylinder?
What colour is oxygen cylinder,
oxygen gas colour, oxygen bottle colour, colour code of oxygen cylinder, oxygen cylinder colour, oxygen colour code, colour of oxygen gas, oxygen gas cylinder colour, or colour of oxygen cylinder in welding?
Oxygen cylinder colour code is Black.
What colour is LPG bottle?
An LPG bottle can be silver, light grey or galvanised.