This helpful set of resources aims to make your pipe marking projects a breeze.
Our Pipe Marking Guidelines Chart covers the requirements of pipe marking according to ASME/ANSI A13.1-2007 including size, colors and placement. The Pipe Audit Worksheet is designed to help with auditing the contents of your pipes and determining labels needed.
What ASME/ANSI A13.1 Requires
ASME/ANSI A13.1 is the standard for identifying the contents of piping systems. It tells you how to label a pipe so anyone who works near it, from maintenance crews to emergency responders, can tell what is inside and which way it flows. A compliant pipe marker has three parts: a color field that shows the type of fluid, a legend that names the contents, and an arrow that shows the direction of flow. The standard also covers how large the marker must be and where to place it.
Following A13.1 helps reduce accidents and cross-connections, speeds up maintenance, and helps you pass safety audits and inspections.
How to Audit Your Pipes
- Walk the facility and list every pipe run, including those above ceilings and in mechanical rooms.
- Record what each pipe carries, its outside diameter, its location, and the direction of flow.
- Match each pipe to a fluid class in the color chart above.
- Choose the marker size from the size chart, then count how many markers and arrows each pipe needs.
- Note what is already marked, and replace anything faded, damaged, or missing.
The free Pipe Audit Worksheet walks you through these steps. Download it above.
Need Help With Your Pipe Marking Project?
We can do the audit, supply the markers, and install them. Kasama provides pipe marking services and installation nationwide, and we are a verified Brady reseller for pipe markers and supplies. Want to print your own markers? We carry the Brady M611, Brady S3100, and LabelTac Pro X label printers.
Request a free pipe marking quote or call 1-844-4KASAMA.
Pipe Marking Guide FAQ
- What are the three parts of an ASME A13.1 pipe marker?
- A color field that shows the fluid class, a legend that names the contents, and an arrow that shows the direction of flow.
- What color is a compressed air pipe marker?
- Compressed air is marked with a blue background and white letters.
- How big should my pipe markers be?
- Marker size depends on the outside diameter of the pipe or its covering. A pipe 3/4 in to 1-1/4 in across uses an 8 in color field with 1/2 in letters, and larger pipes use longer fields and taller letters.
- Is pipe marking required by OSHA?
- OSHA references the ANSI/ASME A13.1 standard as the recommended scheme for identifying piping systems in industrial and commercial facilities.
- Can Kasama mark my pipes for me?
- Yes. We audit your facility, supply the markers, and install them nationwide. See our pipe marking services.