Advanced Coating Technology
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Three layer pipe coating systems for the exterior protection of steel pipelines have been used in the oil and gas industry for more than 20 years. The three-layer systems offer the advantages of mechanical, chemical, and electrical resistance of the polyolefin top-coat in combination with the excellent adhesion of epoxy to metal. The standard system being offered by Global Tubing for coiled line pipe consists of the following:
- A fusion bonded epoxy primer applied to a prepared steel surface
- An adhesive copolymer tie layer
- An extruded polyolefin top-coat (typically high density polyethylene or alternatively polypropylene for high-temperature applications) as required to achieve the required total coating thickness
The Global Tubing coating manufacturing layout (pictured above) is the most advanced system in the world and utilizes a fully integrated milling and coating operation.
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Coating Properties & Parameters
Coating Type | Max Temperature | Anti-Corrosion | Rocky Terrain | Subsea | Horizontal Directional Drilling | Thickness Ranges | Color |
---|---|---|---|---|---|---|---|
FBE | 230°F/110°C | YES | NO | YES | NO | 8-18 mils | Green |
3LPE | 185°F/85°C | YES | YES | YES | YES | 51-120 mils | Yellow / Black |
3LPP | 248°F/140°C | YES | YES | YES | YES | 51-120 mils | White |
ARO | 230°F/110°C | YES | YES | YES | YES | 21-31 mils | Brown |