Asphalt Enamel



Operating Conditions

Asphalt Enamel pipeline coatings are suitable for oil, gas and water pipelines of all diameters and for operating temperatures up to 90°C. Asphalt enamel has an extensive track record of use in the oil and gas industry and is one of the coatings of choice for corrosion protection of offshore pipelines.
 
Application and Standards
A primer is applied to the blast cleaned surface and then the asphalt enamel, and various wraps are applied to this primed surface to build up the coating thickness.
 
Typical Properties
 
Description Reference Standard Typical Value*

Cathodic Disbondment
@ 20±5°C, 28 days

 BS4164, Appendix M Maximum 10 mm

Adhesion
(Peel adhesion)
@ 30°C
@ 40°C
@ 50°C
@ 60°C

 BS 4147 Appendix H
 



- Maximum 3.0 mm
- Maximum 3.0 mm
- Maximum 3.0 mm
- Maximum 3.0 mm

Impact Resistance
(Impact Disbonded area)
@ 0°C
@ 25°C

 BS 4147 Appendix G


-Maximum 6500 mm²
Flexibility
@ 0°C		 BS 4147 Appendix F
Minimum 15 mm
Hardness
(Penetration @ 25°C)
Minimum Pipe Diameter
Maximum Pipe Diameter
Minimum Pipe Length
Maximum Pipe Length
Minimum Operating Temperature
Maximum Operating Temperature		 EN 1426
0.5 -1.7 mm
6.625"
60"
9.0 m
13.0 m
-40°C
90°C
 
*Typical values are quoted.
 
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