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ANSI / ASME Standard A13.1-2007
|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"|
|Note: For pipes less than 3/4" in diameter, a permanently legible tag is recommended.|
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."
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.