Pre-Painted inner wall corner

PPGI external corner is manufactured from PPGI sheets according to:
GOST EN 10326-DX51D
Stuff: Korea (20 years' factory warranty for paint quality)
1. Steel Sheet
2. Z 225-275
3. Passivation layer
4. Primer 10 micron
5. Polyester 25 micron
6. Protective Lacquer
7. Sheet’s thickness 0.40-0.50 mm