High Temp. Fire Sprinkler Water Pipe Markers are used to identify piping systems in industrial environments that are expected to reach higher temperatures or harsh exposure to chemicals. System 4 Pipe Markers meet specification compliances for ANSI / ASME A13.1 standards for the identification of fire sprinkler system pipes. No pipe preparation is needed for these markers. Fire sprinkler water pipe markers are available in wrap-around and strap-on formats for pipe outside diameters ranging from 1/2 inch to over ten inches and provide 360 degree visibility.