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GHS/ANSI-Compliant Pipe Markers

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Outside Diameter of Pipe	Size of Letters
3/4" to 1-1/4"	1/2"
1-1/2" to 2"	3/4"
2-1/2" to 6"	1-1/4"
8" to 10"	2-1/2"
Over 10"	3-1/2"
Note: For pipes less than 3/4" in diameter, a permanently legible tag is recommended.

ANSI / ASME Standard A13.1-1996

The ANSI / ASME Standard for pipe identification is a widely used guideline in determining pipe identification requirements. The purpose of the standard is to "assist in identification of hazardous materials conveyed in piping systems and their hazards when released into the environment. Pipes are defined as conduits for the transport of gases, liquids, semi-liquids or fine particulate dust."

Size Recommendations
The A13.1-1996 standard makes recommendations for the size of letter height and length of color field for various pipe diameters. These recommendations are shown in the table to the right. Our pipe markers, used properly with arrows and banding tape or arrow tape, meet or exceed the standard.

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Choose from what we have in stock

Hazardous Materials Material examples Flammable or explosive Chemically active or toxic Extreme temperature/pressure Radioactive All pipe markers of this classification are printed as black on yellow.	Low Hazard Materials Material examples Liquid Liquid mixture Gas Gaseous mixture All liquids of this classification are printed as white on green. All gases are printed as white on blue.	Fire-Quenching Materials Material examples Water Foam Carbon dioxide Halon™ All pipe markers of this classification are printed as white on red.
Toxic or Corrosive Hazardous material, toxic and corrosives (e.g. chlorine). All pipe markers of this classification are printed as white on orange.	Combustible Fluids Greases, heavy oils and combustible waste (e.g. kerosene and helium). All pipe markers of this classification are printed as white on brown.

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These high-quality pipemarkers are printed on pressure-sensitive vinyl which is chemical resistant and resists fading and scratching. It is recommended that pipes should be marked at both sides of floor or wall penetration, adjacent to changes in direction, adjacent to all valves and flanges and every 25’ to 50’ intervals on straight runs. Stock GHS ANSI A13.1 and Canadian CGSB Standards. Both of these standards comply with GHS within OSHA and WHMIS.

ICC Compliance Center stocks all pure chemicals with the proper names, direction arrows and classification.

Product Information:

• ALL HIGH HAZARD materials use black letter on yellow material
• Pipemarkers are printed in 1”, 2”, 3”, or 4” widths
• Length depends on the wording
• Available in packages of 25

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Pipe Marking Diagram