Presco underground warning tape is buried on top of underground electrical lines, gas pipes, and communications cables. Presco's heavy metal-free underground warning tape serves as a durable, high-visibility proximity warning device that's resistant to the elements. It meets or exceeds all industry specs, and comes in a variety of bright colors that are fully APWA compliant. Presco underground warning tape is available in detectable and non-detectable. We accept custom orders for underground warning tape as well. Call 1-877-899-SAFE for assistance.