Aluminum foil warning tape, is one kind of detectable tape, that could be installed underground. It is mainly designed to detect the position of underfloor pipes, such as gas pipeline, oil pipeline, water supply pipelines, electronic wires and cables, communication cables, etc., to avoid accident damage during construction. It serves as the warning of underground piping systems.

High-strength PE warning tape, normally found in hazardous construction sites and traffic accident scenes, could be used for protective and warning signs.