What are Pipe Markers?
In Australian industrial and commercial workplaces, pipe marking is not a nice-to-have, it's a compliance requirement. Whether you're running a manufacturing facility, a food processing plant, a hospital, or a commercial building, the pipework running through your site must be clearly and correctly identified.
Pipe marker stickers and pipeline labels are the standardised solution. They tell workers, contractors, and emergency responders exactly what's inside a pipe, which direction it's flowing, and what hazards to be aware of instantly, without needing to trace a line back to its source.
This guide covers what pipe markers are, what Australian compliance requires, and how to choose the right pipeline labels for your facility.
What are Pipe Markers
The Basics of Pipe Marker Stickers
A pipe marker is a colour-coded, adhesive label applied directly to pipework to identify its contents and associated hazards. Also referred to as pipe marker stickers or pipeline labels, they are used across a wide range of industries including mining, oil and gas, manufacturing, healthcare, food production, and building services.
A compliant pipe marker typically includes:
- A background colour identifying the category of substance (e.g. green for water, orange for electrical)
- Text clearly naming the specific substance (e.g. "Compressed Air", "Hydraulic Oil", "Potable Water")
- A directional arrow showing the flow direction of the substance
- Hazard symbols where required (e.g. flammable, toxic, corrosive)
Together, these elements give anyone on site the information they need to act safely — without guesswork.
Australian Compliance: What the Standard Requires
AS 1345-1995: The Australian Standard for Pipe Marking
In Australia, pipe marking is governed by AS 1345-1995, the Australian Standard for the identification of the contents of pipes, conduits, and ducts. This standard sets out the colour coding system, text requirements, sizing, and placement guidelines that workplaces must follow to be compliant.
Compliance with AS 1345-1995 is a legal requirement in many industries and is considered best practice across all sectors. Non-compliant or missing pipe markers can result in workplace incidents, failed safety audits, and significant liability exposure.
Colour Coding Under AS 1345-1995
The standard assigns specific colours to categories of substances, making it possible for anyone on site to interpret a pipe marker at a glance:
- Green - Water
- Red - Fire protection systems
- Orange - Electrical
- Purple - Alkali / Acids
- White - Communications
- Blue - Air
- Grey - Steam
These colour codes must be applied consistently across a facility. Inconsistent or non-standard marking creates confusion and significantly increases the risk of accidents, particularly during maintenance or emergency response situations.
Size Requirements for Compliant Pipeline Labels
AS 1345-1995 also specifies minimum text height based on pipe diameter to ensure markers are legible from a safe working distance:
- Pipes 40mm to 75mm — minimum 12mm text height
- Pipes over 75mm — minimum 24mm text height
Choosing the correct size is not just about visibility, it's part of meeting your compliance obligations. Undersized or illegible labels do not meet the standard.
Are Your Pipe Marker Stickers Compliant?
This is a question every facility manager and WHS officer should be asking. Compliant pipe marker stickers must:
- Use the correct AS 1345-1995 colour coding for the substance category
- Include clear, legible text identifying the specific substance
- Include a directional flow arrow
- Be sized correctly for the pipe diameter
- Be made from durable materials that remain legible over time
- Be placed at the correct intervals and locations throughout the facility
New Signs pipe marker collections are manufactured to meet Australian standards, giving you confidence that your labelling is compliant from the moment it's applied.
Types of Pipe Markers
Pre-Printed Pipe Markers
Pre-printed pipe marker stickers are the most practical and cost-effective solution for the majority of Australian workplaces. Available in standard colours and text formats aligned with AS 1345-1995, they provide a fast, consistent, and compliant way to label pipework across a facility.
New Signs stocks a comprehensive range of pre-printed pipe markers across all major substance categories, including air, gases, water, steam, fire protection, electrical, and more. Each marker is produced to Australian standards and manufactured from durable materials designed to withstand industrial environments.
Custom Pipe Markers
For facilities with specialised substances, unique naming conventions, or pipework that falls outside standard categories, custom pipe markers provide a fully tailored solution. Custom pipeline labels can be produced with specific text, colours, sizing, and symbols to accurately reflect the contents of your pipework.
This is particularly valuable in chemical processing, pharmaceutical manufacturing, food production, and any environment where standard labels don't cover every substance on site. New Signs offers custom pipe markers designed and produced to your exact specifications.
Pipe Markers by Substance Category
New Signs organises its pipe marker range by substance category, making it straightforward to find the right label for every pipe in your facility. Categories include:
- Pipe Markers - Air
- Pipe Markets - Water
- Pipe Markers - Alkali & Acid
- Pipe Markers - Fire protection
- Pipe Markers - Oils
- Pipe Markers - Gases
- Pipe Markers - Electrical
- Pipe Markers - Communications
- Pipe Markers - Steam
- Pipe Markers - Pool/Spa
- Pipe Markers - Miscellaneous
- Pipe Markers - Custom
This category-based approach simplifies the ordering process and helps ensure nothing gets missed during a facility-wide labelling audit or new installation.
Where to Place Pipe Markers
Correct placement is just as important as the marker itself. Under AS 1345-1995 and general WHS best practice, pipe markers should be placed:
- At every valve, junction, and branch point
- At regular intervals along long pipe runs (typically every 3–5 metres)
- At the start and end of each pipe run
- Near any equipment connected to the pipe (pumps, tanks, heat exchangers)
Consistent, thorough placement ensures that anyone working anywhere in a facility can identify what's in a pipe without having to search for a label, which is exactly what the standard is designed to achieve.
Compliant Pipe Markers Start Here
Pipe markers are a small investment with significant consequences when they're missing, incorrect, or non-compliant. For Australian workplaces, meeting the requirements of AS 1345-1995 is not optional and the right pipe marker stickers make compliance straightforward.
From standard pre-printed pipeline labels across all major substance categories to fully custom solutions for specialised facilities, New Signs stocks a comprehensive range of compliant pipe markers built for Australian conditions and shipped nationwide.
If you're unsure whether your current pipe marking meets the standard, now is the time to review it. The cost of getting it right is far less than the cost of getting it wrong.
FAQ's
Q: Are pipe markers legally required in Australian workplaces?
Yes. Pipe marking in Australian workplaces is governed by AS 1345-1995, which sets out colour codes, text requirements, sizing, and placement guidelines. Compliance is a legal requirement in many industries and is considered best practice across all sectors. Non-compliant or missing markers can result in failed safety audits and significant liability.
Q: How do I know if my pipe marker stickers are compliant?
Compliant pipe markers must use the correct AS 1345-1995 colour coding, include clear text identifying the substance, show a directional flow arrow, be correctly sized for the pipe diameter, and be made from durable materials that remain legible over time. New Signs pipe markers are manufactured to meet these requirements.
Q: What colours are used for pipe markers in Australia?
Under AS 1345-1995, green indicates water, red indicates fire protection systems, orange indicates electrical, blue indicates air, and grey indicates steam. These colours must be applied consistently across your facility.
Q: Can I get custom pipe markers for substances not covered by standard labels?
Yes. New Signs offers custom pipe markers produced to your exact specifications, including specific text, colours, sizing, and symbols. This is particularly useful for chemical processing, pharmaceutical, and food production environments where standard labels may not cover every substance on site.
Q: How often should pipe markers be inspected and replaced?
Pipe markers should be inspected regularly and replaced whenever they become faded, damaged, or illegible. A label that can't be read is not compliant. In harsh environments, high heat, UV exposure, chemical contact, or high-traffic areas, more frequent inspection is recommended. Choosing durable materials from the outset significantly reduces replacement frequency.