Pipe Marking

Printing your own pipe marking labels provides tremendous cost savings and versatility compared to pre-made pipe marking labels.

Pipe marking labels must effectively communicate the contents of all visible pipes and give additional detail if special hazards exist, such as extreme temperature or pressure.

Pipe Marking Chemical Color Guides

Free PDF and plastic laminated Pipe Marking Chemical Color Guides are available by emailing sales@precisionlabelproducts.com

ASME (ANSI) A13.1-2007 requires pipes be marked with a legend indicating the name of the contents and arrow showing direction of flow of the material. A color is used in combination with the legend to identify the characteristic hazards of the contents.

The ANSI standard has color codes for each classification of material. High-hazard materials require a yellow label with black letters. There are two color choices for low-hazard materials: green labels with white lettering if the low hazard material is liquid or liquid admixture, or blue with white lettering for gas or gaseous admixture. Fire suppression materials require red labels with white lettering.

The ANSI standard also describes the size of label lettering relative to pipe diameter.

The ANSI standard describes how pipe identification labels should appear to be viewed properly. Positioning the labels depends on the pipe's location in proximity to where it's viewed. Labels should be placed on the bottom of overhead pipes and on the top of floor level pipes. Labels should be placed on the side of pipes viewed straight on. Labels should also be located near valves, branches, or where a change in direction occurs. Labels should be placed to mark the entry and re-entry points of pipes passing through walls. The key to pipe marking label placement is to have enough labels for easy identification.

Contact Precision Label Products for information regarding downloading American Society of Mechanical Engineers (AMSE) technical data.