ground screw pile

Ground Screw Pile – Q&A

Leili Machinery Co., Ltd.

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Q1: What is a ground screw pile?

A: A ground screw pile (also called screw pile or helical pile) is a steel foundation pile with helical blades near the tip. It is rotated directly into the ground using a hydraulic pile driver, providing a stable load-bearing foundation for solar panel mounting structures – without any concrete excavation or curing.

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Q2: What are the main specifications of Leili ground screw piles?

A:

Parameter Specification

Material Q235 / S235 carbon steel

Surface Treatment Hot-dip galvanized (80–100μm)

Pipe Diameter 76mm, 89mm, 114mm (custom available)

Wall Thickness 2.5mm – 4.0mm

Length 550mm – 6,000mm (customizable)

Flange Diameter 200mm / 220mm (thickness: 8mm)

Service Life 20–25 years

Certification CE, ISO, TUV available

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Q3: What types of ground screw piles do you offer?

A: We offer five main types:

Type Best Application

Flange Ground Screw Standard solar racking foundations

Big-Blade Screw Pile Soft soil, loose ground conditions

Small-Blade Screw Pile Dense or rocky soil

Adjustable Screw Pile Sloped or uneven terrain

Flangeless Screw Pile Specialized mounting requirements

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Q4: How does a ground screw pile compare to a concrete foundation?

A: Here's a quick comparison:

Feature Ground Screw Pile Concrete Foundation

Installation Time ~2 minutes per pile Days (requires curing)

Cost ~50% of concrete Reference (100%)

Excavation Needed No Yes

Weather Dependent No Yes (cold affects curing)

Relocation Easy – unscrew and reuse Difficult – demolition needed

Environmental Impact Minimal High (cement leaching)

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Q5: What is the load-bearing capacity of Leili ground screw piles?

A: Reference values (actual capacity depends on soil conditions):

Dimension Compressive Load (kN) Pull-Out Force (kN)

76×4×1200mm 25 12.5

76×4×1600mm 35 21.5

76×4×2000mm 45 32.5

89×4×1600mm 41 24.5

89×4×2000mm 55 35.0

114×4×2000mm 66 38.0

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Q6: How are ground screw piles installed?

A: Installation is quick and straightforward:

1. Site survey – Determine optimal pile length and depth based on soil conditions.

2. Layout marking – Precision positioning using surveying instruments.

3. Screw driving – A hydraulic pile driver (such as Leili's LLE12 or L-350) rotates the pile vertically into the ground. Installation typically takes 30–75 seconds per pile.

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Q7: What are the main applications of ground screw piles?

A: Primary applications include:

· Solar PV mounting system foundations (main use)

· Agricultural fencing and vineyards

· Lighting poles and traffic signs

· Container houses and temporary buildings

· Playgrounds and park structures

· Wind turbines and communication towers

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Q8: Why should I choose Leili Machinery for ground screw piles?

A: Here's why:

· Premium Materials – Q235 carbon steel with hot-dip galvanization for 25-year durability.

· Fully Customizable – Length, diameter, thickness, blade type, and flange shape tailored to your project.

· Perfect Compatibility – Works seamlessly with our full range of solar pile drivers.

· Quality Assurance – Rigorous quality control; CE, ISO, TUV certifications available.

· Export Experience – 10+ years serving international solar markets.

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Q9: Can I get custom sizes and specifications?

A: Absolutely. We offer full customization including pipe diameter, wall thickness, length, blade configuration, flange size and shape, and surface treatment. Just send us your project requirements and we'll provide tailored solutions.

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Q10: How can I get a quote or place an order?

A: Contact us directly:

Henan Leili Machinery Manufacturing Co., Ltd.

· Address: Gongyi City, Yong'an Street Office, Yongyi Road No.1, Building 7, Zhengzhou, Henan, China

· Phone: +86 18339980828

· Email: 1727586610@qq.com

Please specify your required pile dimensions, quantity, and soil conditions for an accurate quote.

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For additional technical data, load calculations, or sample orders, feel free to reach out to our sales team.