A guide to Australian pipe marking standards

pipe markers

The Australian pipe marking standard AS 1345-1995 establishes a uniform approach for identifying the contents of pipes and ducts in the workplace. Workers using the pipe markers to easily identify the contents of a pipe and take the appropriate safety precautions by learning and following applicable labelling rules.

Standards Australia—the Australian equivalent of the American National Standards Institute—created the standard (ANSI). Standards Australia, like ANSI, is the country’s major standards development agency and an International Organization for Standardization member (ISO). Standards Australia, too, is not in charge of enforcing or regulating standards, but rather of producing consensual standards that may or may not become law.

AS 1345 was designed (together with ANSI/ASME A13.1) to achieve industry-wide consistency through the use of colours, symbols, and other symbols. In this post, we will go through the standards of marking. 

pipe markers

AS 1345 Colours for Pipe Labels

Trained staff can immediately recognise what kind of liquid is flowing through the pipe using a standardised color-coding scheme for pipe markings. This is referred to as the basic identifying colour in the AS 1345-1995 standard. The following are the colour specifications as stated in the standard:

  • Silver-Grey is used for Steam; Live steam, process steam, exhaust steam, etc.
  • Green is used for Water; Drinking water, wastewater, storm water, recycled water, etc.
  • Sand/Yellow-Ochre: Gases; Fuel gases, process gases, liquefied gases under pressure, medical gases, etc.
  • Light Blue: Air; Compressed air, ventilation, instrument air, etc.
  • Violet: Alkalis/Acids; All corrosive liquids and gases.
  • Black: Miscellaneous; Chemical mixtures, sewage, process wastes, etc.
  • Brown: Oils, flammable liquids, and combustible liquids; Fuel and lubricating pols, oils used for food processing, petrol oil, etc.
  • White: Communications; Conduits with extra low voltage supply, telephone circuits, etc.
  • Red: Fire Protection; Water dedicated for fire services, fire extinguishing foam, etc.
  • Orange is used for Electrical; Electrical supply circuit, used for conduits.

Supplementary Colors 

Any extra features of the pipe’s contents are indicated by a different colour band or panel. A dark blue ring, for example, could represent components suitable for human consumption, such as drinkable water. A yellow panel, on the other hand, is used to identify dangerous contents, along with a related safety symbol:

  • General Hazard: Use of hazard stripes
  • Radiological Hazard: Toxic symbol
  • Biological Hazard: Biohazard symbol

These additional colour markers can be printed as a panel on the label or wrapped around the pipe to help distinguish the contents and potential risk level.

Creating Pipe Labels

Any institution that wants to totally re-label its pipes or start a pipe labelling project may feel overwhelmed, and ordering from catalogues can be a real pain. LabelTac printers provide a cost-effective way for businesses to manufacture durable, chemical-resistant labels. When labelling a pipe, duct, or conduit, make sure you have the correct size and colour. It’s simple to design a safety label that satisfies industry requirements and looks professional using the LabelSuite software and easy-to-use interface. Whether you need to label a pipe in a walk-in freezer or a duct outside on a building site, we provide LabelTac supplies in a number of materials so you can print the proper labels for every purpose.

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