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Product Description

Produced by welding one or more helical steel plates onto a central steel shaft, with a pointed tip for easy penetration. Features high pullout and compressive capacity, rapid installation, and immediate load bearing. Available steel grades: Q235B, Q355B, S235JR, S355JR, SS400. Shaft types: round pipe, square tube, or solid bar. Shaft diameter: 40mm – 200mm (round), 40×40mm – 100×100mm (square). Wall thickness: 2.5mm – 10mm (hollow); solid bar diameter: 20mm – 50mm. Helical blade diameter: 80mm – 500mm (single or double helix, triple helix available). Blade thickness: 4mm – 12mm. Standard length: 1.2m – 4.5m (custom up to 8m). Surface finish: hot-dip galvanized (Z275–Z600) or epoxy coated. Coating thickness: 45µm – 120µm. End connections: flat cap, flanged, threaded, or with bracket plate. Helix pitch: 25mm – 100mm (standard 50mm). Meets ASTM A36, EN 10346, or GB/T 13912 standards. Custom shaft/blade combinations and extensions available for deeper installations.

Parameter

Product Name	Helical Screw Pile (Helical Anchor / Ground Screw)
Material / Steel Grades	Q235B, Q355B, S235JR, S355JR, SS400
Shaft Types	Round pipe, square tube, solid bar
Shaft Diameter (Round)	40mm – 200mm (common: 60, 76, 89, 114, 140, 168)
Shaft Size (Square)	40×40mm – 100×100mm
Solid Bar Diameter	20mm – 50mm
Wall Thickness (Hollow)	2.5mm – 10mm (depending on diameter and load)
Helical Blade Diameter	80mm – 500mm (single, double, or triple helix)
Blade Thickness	4mm – 12mm
Number of Helices	1, 2, or 3 (standard: single or double)
Helix Pitch	25mm – 100mm (standard 50mm)
Standard Length	1.2m – 4.5m (custom up to 8m)
Tip Treatment	Pointed or beveled tip for easy penetration
End Connection / Cap	Flat cap, flanged, threaded (male/female), or bracket plate
Surface Finish	Hot-dip galvanized (preferred) or epoxy coated
Galvanized Coating	Z275 – Z600 (g/m²); thickness 45µm – 120µm
Corrosion Standard	ASTM A653, EN 10346, GB/T 13912
Compressive Capacity	Up to 300 kN (depending on shaft size, blade area, and soil)
Tensile (Pullout) Capacity	Up to 250 kN (soil dependent)
Yield Strength (Steel)	≥235 MPa (Q235B), ≥355 MPa (Q355B)
Installation	Hydraulic torque motor or excavator with rotary drive
Standards Compliance	ASTM A36, EN 10346, GB/T 13912, plus project-specific geotechnical specs
Custom Options	Shaft diameter, length, helix configuration, coating weight, end cap design

Application description:

Widely used as deep foundation supports for solar panel arrays, boardwalks, light poles, signage, communication towers, temporary structures, and residential decks. Also suitable for anchoring retaining walls, earth retention systems, pipeline supports, and slope stabilization. The helical design allows quick, vibration-free installation with minimal soil disturbance, providing immediate load-bearing capacity without concrete curing time.

Production description

Steel pipe or bar is cut to specified length. Helical blades are cut from steel plate, formed, and welded onto the shaft at calculated pitch. A pointed tip is attached at one end, and a connecting cap (flange, thread, or plate) is welded at the other. The pile is hot-dip galvanized (Z275–Z600), then inspected for weld integrity, coating thickness, and dimensional accuracy.

Shipping Packaging

For export, helical screw piles are bundled with wooden separators, secured with steel straps, fitted with end protectors (for caps and tips), and packed on ISPM-15 pallets. Labels include grade, shaft size, blade diameter, length, and heat number for safe sea freight.

Why Choose Us?

1.Factory Strength:Direct manufacturer with automated cutting, forming, welding, and hot-dip galvanizing lines, ensuring precise helix pitch, consistent blade-to-shaft weld strength, and uniform zinc coating (Z275–Z600) for shaft diameters 40–200mm and blade diameters 80–500mm.

2.Quality Assurance:Strict control of steel grade, wall thickness, blade geometry, weld integrity (visual and magnetic particle inspection), coating thickness (45–120µm), and straightness; compliant with ASTM A36, EN 10346, GB/T 13912.

3.Certifications & Reports:Mill test certificates (MTC) with each shipment; third-party inspections (SGS, BV) and coating thickness/salt spray/weld test reports available upon request.

4.Customization & Service:Wide steel grades (Q235B–Q355B, S235JR–S355JR), shaft types (round pipe, square tube, solid bar), helix configurations (single/double/triple), custom lengths up to 8m, and various end connections (flange, thread, plate, cap) with fast lead times.

5.Export Packaging:Wooden separators + steel strapping + end protectors (tips and caps) + ISPM-15 pallets + clear labeling for safe sea freight and damage-free delivery.

FAQ

1. How to store helical screw piles to prevent coating damage and corrosion?

Store on level, dry ground on wooden sleepers or pallets, keep piles elevated to avoid moisture. Do not drop or drag piles to protect galvanized coating and helix blades. For long-term storage, keep original wrapping and store under cover. Minor coating scratches should be repaired with zinc-rich paint before installation.

2. How are helical screw piles installed?

Installation uses hydraulic torque motors (skid-steer, excavator, or handheld units). The pile is rotated into the ground until the desired torque and depth are reached. No excavation, concrete, or curing time is required. Installation torque is monitored to verify load capacity. For deeper installations, extension shafts are available.

3. What torque or capacity can your helical piles achieve?

Capacity depends on shaft diameter, blade size, number of helices, and soil conditions. Typical ultimate torque capacity ranges from 2,000 to 15,000 N·m. Compressive loads from 20 kN to over 300 kN; pullout loads similar. Torque-to-capacity correlation charts are provided. We can also recommend specific configurations based on your geotechnical report.

Customer Reviews

FACTORY APPEARANCE

HONORS AND QUALIFICATIONS

The company has sufficient inventory and complete varieties and specifications. Special materials and specifications are produced according to customer requirements and exported to Asia, the Middle East, Europe and other countries and regions. We have our own quality management systems: ISO9001, ISO14000, OHSAS18001 standards.

Electromagnetic Compatibility and Low Voltage Directive Certification

ABS Classification Society Certification Certificate

Quality Management System Certification Certificate 2

IATF 16949 Quality Management System Certification Certificate

API Q1 Quality System Certification Certificate

CCS Classification Society Certification Certificate

CUSTOMER VISIT

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