Coating requirements for fiber optic distribution frames

The metal structural components treated with coating should have good adhesion between the coating and the substrate, and the adhesion should not be lower than the level 2 requirements in Table I of the GB/T9286 standard: there should be coating detachment at the intersection and/or along the edge of the incision, and the affected cross cutting area should be significantly greater than 5%, but not significantly greater than 15%.