Pipe Marking Season is around the Corner - An ANSI Guide

Pipe marking ensures workplace safety and operational efficiency by clearly identifying the contents of pipes and conveying important safety information.

1. Pipe Label Components

A complete pipe label should include:

• Text: Indicates the pipe's content (e.g., "Steam," "Compressed Air").

• Color Coding: Specifies the material hazard or function.

• Flow Direction Arrows: Indicates the direction of flow (single- or dual-ended arrows).

2. Color Code Chart

Below are the recommended color codes from ANSI/ASME A13.1:

3. Label Size Guidelines

The size of the pipe label should match the pipe's outer diameter:

4. Label Placement Guidelines

• Accessibility: Labels should be visible from all normal viewpoints.

• Proximity: Place labels near valves, flanges, and changes in direction.

• Frequency: Repeat labels every 25–50 feet, or more frequently in concealed or complex installations.

5. Flow Direction

• Arrows must accurately represent the direction of the flow in the pipe.

• Dual-headed arrows can be used if the flow direction can change.

6. Application Tips

• Ensure surfaces are clean and dry before applying labels.

• Use adhesive-backed or snap-around markers suited for the pipe material and environment.

• For outdoor or high-heat environments, choose materials resistant to UV, temperature extremes, and chemicals.

7. Additional Tips for Compliance

• Verify that all markings comply with local regulations and industry standards.

• Use supplemental signage where pipes are obscured or in confined spaces.

By implementing these steps, you can enhance safety, comply with regulations, and reduce maintenance confusion. Let me know if you'd like us to install the labels or which label printer is best for the job!