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Industrial Pipe Markers
Online Tutorial
Label Color

Pipe markers are color coded to identify the type of material carried by the pipe. The following describes the color code for labels used for pipe marking:

PIPE MARKING COLOR CODE
Inherently Hazardous Material Extreme Pressure or Temperature
Radioactive
Corrosive or Caustic
Toxic or Creates Toxic Gass
Explosive or Flammable
BLACK ON YELLOW
 
Low Hazard Materials WHITE ON GREEN Liquid or Liquid Mixture
WHITE ON BLUE Gas or Gaseous Mixture
 
Materials for Fire Suppression WHITE ON RED Sprinkler water, Carbon Dioxide, Foam, Halon, etc.

Yellow (with black text) indicates the pipe contains materials that are inherently hazardous. Examples would be corrosive, caustic, explosive or flammable materials. Radioactive, toxic or any material that creates a toxic gas are also classified as inherently hazardous. In addition, if the contents of the pipe are under extreme pressure or temperature, they are considered to be inherently hazardous.

Green (with white text) identifies a pipe as carrying a liquid, or liquid mixture, that is a low hazard material.

Blue (with white text) identifies a pipe carrying a low hazard gas or gaseous mixture.

Red (with white text) identifies the pipe as being used for materials for fire suppression. This includes maerials such as carbon dioxide, Halon, foam and sprinkler water.

If you are using a label printer to make your pipe markers, you need to load the printer with the proper color tape for the type of pipe label you'll be printing.

Preprinted pipe markers may be purchased with the appropriate background color. If you do not have the correct color label available when it is needed, DO NOT substitute a label with a different color. Always use the correct color label.


Pipe Marking Online Tutorial - Other Topics

Pipe Marker Length

Pipe Marker Text

Pipe Marker Color

Pipe Marker Location

Pipe Marker Material Selection

 
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