coated aluzinc steel coil manufacturer in china

Prepainted Galvanized Steel Coil Product Performance

Pencil hardness: (China 505 pencil) 2H3H

Impact test: 12.7mm diameter punch, 500g hammer, 50cm height impact, tape, 180-degree angle of fast peeling, paint film adherence is good, no shedding.

Bending test (T-bend): 180-degree angle bending molding, bending arc inner diameter of 3 times the value of the board thickness (3T) tape, 180-degree angle of the tape, fast peeling, good adhesion of the paint film, no shedding. (0T has special requirements)

Solvent resistance test (M.E.K) dipped in M.E,K or toluene gauze on the surface of the board to apply about 1 kg force to wipe back and forth 100 times the topcoat, 50 times the backcoat, did not see the substrate.

Salt spray test, accelerated weathering, chemical resistance (5% sulfuric acid, 5% sodium hydroxide)