Corrosion protection
ASTM A153 standard for hot dipped zinc coating
Helix Plate material
ASTM A36 hot rolled plate
Surface Treatment
Hot Dipped Galvanized, Painted or Powder Coated
Color
Any colors are available on request
Packaging
According to your demand
Bar Material
40Cr or 45# steel, round corner 5mm radius
Helices thickness
in 3/8" and 1/2" inch
All helix leading edges
sharpened and rock cut and 45 degrees