Before coating, the pipe surface is sandblasted to roughen the surface and remove surface rust. With the roughness that occurs after sandblasting, the surface grows by approximately 300% and this is necessary for the paints to adapt to the surface and show better adhesion. Swedish Standards SA (ISO 8501-1) are used in the cleanliness rating (blasting grades) of the metal surface being blasted, the classification starts with SA1 and can be improved up to SA3.

SURFACE PREPARATION STANDARDS

ISO 8501-1, ISO 8501-2, ISO 8501-3

INNER COATING STANDARDS

EPOXY COATING: EN 10289, AWWA C210, NFA 49709, API RP 5L2

OUTER COATING STANDARDS

• POLYETHYLENE COATING: DIN 30670, EN 10288, UNI 9099, NFA 49710, AWWA C215
• POLYPROPYLENE COATING: DIN 30678, NFA 49711
• EPOXY COATING: EN 10289, AWWA C210, NFA 49709
• FUSION-BONDED EPOXY COATING: AWWA C213
• POLYURETHANE: EN 10290, AWWA C 222