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The outer tape series is a Cold Applied Tape coating system for corrosion protection of Oil, Gas, Petrochemical, and Waste Water underground or overhead pipelines. The outer-layer tape backing is compounded to provide resistance to outdoor weathering.
The outer-layer tape shall be applied after the inner-layer tape by hand or with a wrapping machine.
The tape consists of two layers — an adhesive layer and a film backing:
| Physical Properties | Test Method | Typical Value (Metric) | |
|---|---|---|---|
| Total thickness | ASTM D 1000 | 1.1 mm | |
| Backing thickness | ASTM D 1000 | 0.5 mm | |
| Adhesive thickness | ASTM D 1000 | 0.6 mm | |
| Width | — | 50 – 800 mm | |
| Length | — | 30 – 240 m | |
| Backing color | — | Black or others | |
| Tensile strength | ASTM D 1000 | 70 N/cm | |
| Elongation | ASTM D 1000 | 400% | |
| Peel Adhesion to inner-layer tape | ASTM D 1000 | 23 N/cm | |
| Cathodic Disbandment | ASTM G8 | 0.25 in radius / 6.4 mm | |
| Dielectric Strength | ASTM D 149 | 30 KV | |
| Volume Resistivity | ASTM D 257 | 2.5×1012 ohm·cm | |
| Water Absorptivity | ASTM D 570 | 0.2% | |
| Water Vapor Transmission Rate (24h) | ASTM F1249 | 0.01 g/100 sq in/24h | 0.1 g/100 sq mm/24h |
| UV Resistance | — | Excellent | |
| Application Temperature | — | -40°F to 140°F | -40°C to +60°C |
Note: Custom-made is available to meet any customer's special demand.
