Industrial pipeline arrow color
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\"Basic Identification Colors and Symbols for Industrial Piping\" specifies the colors that pipes should be painted in depending on the medium contained within them, and requires arrows to indicate the direction of flow of the medium. But the color of the arrow isn’t specified. The compressed air pipes in our facility are painted blue. Since the project is quite large, we plan to use light gray rings for marking; so what color should the arrows be? Also, must the arrows be distributed along the entire length of the pipe? Our colleague said that it’s sufficient to apply paint only on the imported parts; there’s no need to paint the interior of the factory. Is this in compliance with the standards?
No, they’re all light blue!
The original poster can refer to \"GB 7231－2003 Basic Identification Colors, Identification Symbols, and Safety Markings for Industrial Pipelines\"; however, it only specifies the direction of the markings, but seems not to set any requirements regarding colors!
Refer to \"QSY 134-2005 Standards for the Management of Safety Color Codes for Petrochemical Pipelines\" – what you’re looking for can be found there
Reply to 4# fly_1030: Isn’t this a petroleum-related standard? It’s not very useful for our machining enterprises, is it?
If you cannot find the standard specifications for the machinery, follow this marking. Pipe markings are not only necessary at the inlets and outlets; one marking is required every 6 to 10 meters. Markings are also needed when the pipe changes direction