Small Diameter Pipe Markers Information

Self-Adhesive vinyl Style 18 Pipe Markers are ideal for identifying the content and directional flow of smaller pipes, up to 3/4" in diameter. Markers are made using durable outdoor grade vinyl and aggressive acrylic adhesive with an extra heavy coating to ensure adhesion to a variety of pipe surfaces.

  • Each card consists of 9 individual legends and 9 individual arrow bands
  • Each individual label measures 3" wide x 3/4" high
  • Each legend's text height measures 3/8"
  • Each arrow is 1/2" high
  • Service Temp: -20°F (-29°C) to 200°F (93°C)
  • Minimum Application Temp: 50° F (10° C)
  • Surface Prep: Clean & Dry
  • Compliance: ASME & ANSI A13.1
  • Style 18 Markers Illustration


The secondary means of identification is the color code of the marker. The exact colors are contained in the ANSI Z535.1 Safety Color Code. Color is the secondary means to identification but many times the most important. The color of the marker should be used to identify the characteristic hazard of the contents of the pipe. The following chart list the classifications shown by ANSI / ASME A13.1 2015 as the suggested color combinations for the pipe markers.

    Fire Quenching Fluids

    Safety Red Background / White Legend

    Toxic & Corrosive Fluids

    Safety Orange Background/ Black Legend

    Flammable Fluids

    Safety YellowBackground / Black Legend

    Combustible Fluids

    Safety Brown Background /White Legend

    Potable, Cooling, Boiler feed, & other Water

    Safety Green Background/ White Legend

    Compressed Air

    Safety Blue Background / White Legend

    Defined by the User

    Safety Purple Background / White Legend

    Defined by the User

    Safety White Background / Black Legend

    Defined by the User

    Safety Gray Background / White Legend

    Defined by the User

    Safety Black Background / White Legend

* New 2015 classification, Oxidizing Fluids

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