Green or White writing broad pre painted steel coil
Blue write broad use for chalk writing; no reflect light no chalk
White write broad use for oil pen writing.
Hot Dip Galvanized or Galvalume Steel Coil.
Green or White
ASTM A755, JIS G3312, EN 10169.
Layers of the coating
2/2(2 layers of top coating/2 layers of bottom coating);
2/1(2 layers of the top coating, 1 layer of bottom coating);
Thickness of the coating