The piping and its colors
Everything related to colors is often subjective and covered with a more or less artistic blur. However, the standardization of colors for pipes has been an objective exception to this rule for years.
This standardization is a solid and internationally standardized basis for the marking of pipes intended for the transport of liquid or gaseous materials on land, or on board ships.
For practical use it is important to assign each color an RAL number. The resulting unambiguous and internationally recognizable color coding makes it easier to identify piping in a large or highly complex network, for example on board ships. It therefore makes a major contribution to safety and to ease of use and maintenance.
Below we take the standardized colors and their meaning.
Standard colors or basic recognition colors
| Green | Ral 6010 | Water |
| Silver gray | Ral 9006 | Steam |
| Brown | Ral 8001 | Mineral, vegetable and animal oils; liquid fuels |
| Yellow Ocher | Ral 1004 | Liquefied gas or gas (except air) |
| Purple | Ral 4001 | Acids and bases |
| Light blue | Ral 5012 | Air |
| Black | Ral 9005 | Other liquids |
Safety colors
| Red | Ral 3000 | Fight against the fire |
| Yellow | Ral 1018 | Danger |
| Blue | Ral 5010 | Pure water |
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