ANSI/ASME A13.1 Pipe Marking Standards

According to the most recent ANSI/ASME A13.1 update, it is recommended that all piping systems be labeled with the direction of flow (using arrows at one or both ends of the label), pipe contents, and potential hazards. The pipe markers need to be visible from any angle the piping system is approached, near valves, and at every 25 – 50 feet. To see a list of the latest color code requirements, visit the pipe labels web site.

Although the ASME/ANSI standard suggests labeling all pipes, it is required for pipes to be labeled if the pipe contents could affect procedures during emergency situations. The pipes must also be labeled if the contents are are hazardous, or if any of the valves need to be shut off in an emergency or for maintenance.

In every commercial, retail, industrial, and institutional building there is a series of pipelines. These piping systems will be carrying both hazardous and non-hazardous materials. It is important to follow the ANSI/ASME A13.1 pipe marking standards to be sure that everything is labeled correctly. Get a free guide to learn more about the standards, color codes (pictured here), and other necessary information for labeling pipes in your facility.

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