GB/T 34681-2017 "Paints and varnishes—Determination of overcoatability and recoatability" is applicable to testing the ability of coatings to accept recoating with the same or different types of paints, particularly in scenarios involving the repair of damaged coating areas. Standard test panels are prepared and overcoated under specified conditions. The adhesion and flexibility of the coating are then assessed using cross-cut testers, cupping testers, and other instruments, combined with visual color comparison to evaluate appearance consistency. The standard defines test parameters and criteria for result determination, providing a quality basis for the compatible use of coatings and repair applications.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active | ||
|---|---|---|---|
| CCS | G50 | ICS | 87.040 |
| Release Date | 2017-11-01 00:00:00 | Implementation Date | 2018-05-01 00:00:00 |
