Gas/Oil Line Underground Warning Tapes Locate identity and protect gas and oil lines from unwanted dig-ins by installing WARNTAPE® underground warning tape over your buried gas lines. This underground warning tape will provide continuous protection, alerting workers to stop digging. Standard APWA color coded yellow tapes are available in a variety of stock imprints that are available for immediate shipment. Custom sizes and/ or printing in any imprint or logo are also available. WARNTAPE® underground warning tape will provide maximum protection and will help you avoid dangerous dig-ins and their consequences. Non Detectable Tapes Stop losing revenue, incurring repair expenses and upsetting customers when your underground electric lines are damaged from accidental digging. WARNTAPE® underground warning tape offers a lifetime protection system that will keep your underground electric lines safe from unnecessary damage and resulting repair expenses. When dug up, WARNTAPE® underground marking tape will alert workers to stop digging immediately. Invest in WARNTAPE® underground marking tape.