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SSPC-PS 10.02, Cold-Applied Coal Tar Mastic Painting System
This specification covers a cold-applied coal tar painting system for underground and underwater steel structures, consisting of two cold-applied coats.
This system is suitable for use on parts or structures exposed in Environmental Zones 2C (fresh water immersion), 3B (chemical, neutral), and 3C (chemical, alkaline). It has fairly good abrasion resistance and is suitable for underground use. It must be used with discretion for immersion in corrosive chemicals since the coating is dissolved by some organic solvents and attacked by oxidizing solutions.
The coal tar mastic must be topcoated with coal tar emulsion when exposed to sunlight to prevent checking and alligatoring.