Bar Material: 40Cr or 45# steel, round corner 5mm radius

Helix Plate material conforms to ASTM  A36 hot rolled plate

helices thickness are available in 3/8” and 1/2” inch

All helix leading edges sharpened and rock cut and 45 degrees

Corrosion protection to conform to ASTM A153 standard for hot dipped zinc coating

A better conventional solid steel extra high strength helical screw pile

Welded coupling for greater strength. Eliminates shaft heat damage caused by upset coupling process