Adjustable Helical Screw Piles for Water Proof Ventilation Ductwork

Round Shaft Helical Piers   Shaft material: Seamless high tensile pipe, conforms to ASTM A500 GRADE B Helices material: ASTM A36 Hot rolled plate Corrosion protection conform to ASTM A153 standard for hot dipped zinc coating Round Shank Anchors are Hot Dip Dalvanized to meet ASTM Specification A153. Leading edge of Helices beveled 45 degrees Greater Section Modulus Strength to resist Twisting and Deflection Greater Load Capacities  

Specifications
Shaft Size(inch)	Wall Thick(inch)	Helix Thick(inch)	Lead Length(ft)	Helix Size(inch)	Extension Length(ft)
2.875 OD.	0.262	3/8 or 1/2	3ft/5ft/7ft/10ft	8/10/12/14	3ft/5ft/7ft/10ft
3.00 OD.	0.238	3/8 or 1/2	3ft/5ft/7ft/10ft	8/10/12/14	3ft/5ft/7ft/10ft
3.50 OD.	0.254/0.300	3/8 or 1/2	3ft/5ft/7ft/10ft	8/10/12/14	3ft/5ft/7ft/10ft
4.50 OD.	0.290/0.337	3/8 or 1/2	5ft/7ft/10ft/12ft	8/10/12/14	3ft/5ft/7ft/10ft
5.50 OD.	0.362	3/8 or 1/2	5ft/7ft/10ft/12ft	8/10/12/14	3ft/5ft/7ft/10ft
6.625 OD.	0.562	3/8 or 1/2	5ft/7ft/10ft/12ft	8/10/12/14	3ft/5ft/7ft/10ft

  Notes: Other sizes are available upon request.

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