Australian Standard Pipe Marking Guide

Ensure that your workplace is compliant with pipe marking standards and that your workers are safe. Get your free download today and take the first step towards a safer workplace.

Fill out the form to download your guide

Understanding Australian Pipe Marking Standards: AS 1345-1995

Pipe marking is an essential part of any workplace safety program. It helps workers identify the type of fluid or gas running through the pipes and ensures that the appropriate safety measures are in place. In Australia, pipe marking is governed by Australian Standard AS 1345-1995, which sets out the requirements for pipe marking in different industries.

Why is Pipe Marking Important?

Pipe marking is important for several reasons. First and foremost, it helps workers identify the contents of a pipe quickly and easily. This is critical in an emergency situation, where every second counts. Without proper pipe marking, workers may be exposed to hazardous materials, leading to serious injuries or even death.

In addition, pipe marking helps prevent accidents and damage to equipment. If workers know the contents of a pipe, they can take appropriate measures to prevent leaks, spills, and other hazards. Pipe marking also helps prevent cross-contamination in industrial processes, ensuring that materials are used safely and efficiently.

AS 1345-1995: What You Need to Know

AS 1345-1995 is the Australian Standard for the identification of pipes in different industries. It sets out the requirements for pipe marking, including the colours to be used, the size of the markings, and the information that must be included.

The standard applies to pipes used for the transport of fluids and gases, including water, steam, air, and chemicals. It also applies to pipes used in the construction industry, such as those used for drainage and sewage systems.

Pipe Marking Colour Codes

AS 1345-1995 sets out specific colour codes for pipe marking. These codes help workers identify the contents of a pipe quickly and easily. The colours are based on the type of material being transported and the level of hazard it poses.

Here are the colour codes for pipe marking in Australia:

• Yellow: used for flammable materials, such as petrol, diesel, and natural gas.
• Red: used for fire-related hazards, such as fire sprinkler systems.
• Orange: used for hazardous materials, such as chemicals and toxic substances.
• Green: used for water-related hazards, such as potable water, irrigation systems, and cooling systems.
• Blue: used for compressed air systems.
• Purple: used for reclaimed water systems.
• Brown: used for sewage and slurry systems.

Pipe Marking Size and Information

AS 1345-1995 also sets out requirements for the size of pipe markings and the information that must be included. The size of the markings depends on the diameter of the pipe and the distance from which they will be viewed. Here are the requirements for pipe marking size:

• Pipes with a diameter of less than 25mm: markings should be at least 10mm high.
• Pipes with a diameter between 25mm and 100mm: markings should be at least 20mm high.
• Pipes with a diameter of more than 100mm: markings should be at least 50mm high.

The following information should be included on pipe markings:

• The contents of the pipe, such as water, gas, or chemicals.
• The direction of flow, indicated by an arrow.
• The level of hazard, indicated by the colour of the marking.
• The pipe’s identification number or code.

Want to know more about our pipe marking solutions?

Browse our pipe marking products or ask us a question.