STOP HITTING
BURIED UTILITIES.

Let’s skip the marketing fluff and get straight to the point. Hitting a buried gas line or slicing through a municipal fiber optic cable with an excavator is every contractor’s worst nightmare. It shuts down the job site, racks up massive fines from local authorities, and ruins your company's safety record.

The cheapest insurance policy against a catastrophic utility strike? A high-quality roll of underground warning tape.

But here is the catch that a lot of rookies miss: throwing a strip of tape into a trench isn't enough. If you don't install it at the correct depth, or if you use the wrong APWA color code for your region, you might as well have buried nothing at all. At PAC KING (Beijing BCD Technology), our engineers have watched thousands of miles of our underground warning tape go into the dirt globally. Here is how the pros actually install it.

Choose Your Weapon:
Detectable vs. Non-Detectable

Before you even fire up the backhoe, you need to know what local building codes demand.

Non-Detectable Tape

This is your standard, heavy-duty polyethylene film. It provides a purely visual warning to the guy operating the shovel. You dig, you see brightly colored plastic, you stop digging. Simple and cost-effective.

Detectable Tape

If you are burying non-metallic pipes (like PVC), you must use detectable tape. This version features an aluminum core, allowing future utility crews to map the exact location using a metal detector before breaking the surface.

The "Golden Rule" of
Trench Burial Depth

I cannot stress this enough: do not lay the tape directly on top of the pipe. If an excavator bucket hits the tape and the pipe at the exact same second, the tape failed its job.

Whether you are working in a freeze-thaw climate in Canada or trenching through sandy soil in Australia, the golden rule of installation remains fairly consistent across global municipalities: Bury the tape exactly halfway between the top of the utility line and the surface of the ground.

• Step 1: Lay your utility pipe or cable at the bottom of the trench (let's say 36 inches deep).
• Step 2: Backfill the trench with clean dirt or sand up to the 18-inch mark. Tamp it down slightly.
• Step 3: Unroll your buried utility tape flat along the trench. Try to keep it as straight and centered as possible.
• Step 4: Finish backfilling the rest of the trench to the surface grade.

Now, when an oblivious contractor comes digging next year, they will snag your warning tape at 18 inches, giving them a full 1.5 feet of vertical warning before they hit the actual utility line.

Know Your
APWA Color Codes

Color matters. If an inspector walks onto your job site and sees you wrapping a water line with yellow tape, you are going to fail the inspection. Most regions follow the strict APWA (American Public Works Association) uniform color code. Make sure your inventory matches these standards:

• Red: Electric power lines, cables, conduit, and lighting cables.
• Yellow: Gas, oil, steam, petroleum, or gaseous materials. (The most critical tape on any site).
• Orange: Telecommunication, alarm or signal lines, cables, or conduit.
• Blue: Potable water.
• Green: Sewers and drain lines.
• Purple: Reclaimed water, irrigation, and slurry lines.

Don't Compromise on
Tape Quality

Dirt is heavy, rocky, and acidic. If you buy cheap, thin tape, it will degrade, snap under the weight of the backfill, or the ink will bleed out within a year. We manufacture our warning tapes using virgin polyethylene and lock the warning message under a protective layer so the ink never rubs off—even decades after it was buried.

If you are a project manager or a wholesale distributor stocking up for the upcoming construction season, do it right the first time. Check our Underground Warning Tape specs or contact our engineering team to request factory-direct bulk pricing and custom printed warning messages for your specific municipality.