Steel helical ground screws are steel foundation components installed into the ground by rotation. Their helical blades engage with the surrounding soil, while the shaft and head connection transfer loads between the foundation and the supported structure.
Designed for distributors, solar mounting manufacturers, EPC contractors, construction companies, and infrastructure project buyers, these products can be specified according to project drawings, soil conditions, structural requirements, and installation constraints.
Typical Applications
• Solar Mounting Structures: Foundation components for ground-mounted photovoltaic racking systems, subject to project-specific structural and geotechnical requirements.
• Fencing and Security Systems: Ground fixing for fence posts, gates, and selected security barrier structures.
• Outdoor Infrastructure: Foundation support for signs, utility equipment, and other compatible outdoor structures.
• Modular and Temporary Structures: Ground anchoring for selected modular installations and temporary structures where the foundation design permits screw installation.
Technical Specifications & Custom Configurations
Ground screws can be manufactured to approved drawings and project specifications. Final availability, tolerances, and manufacturing feasibility should be confirmed during technical review.
Configuration Options
• Shaft Design: Round steel tubing, solid round or square shafts, and other feasible profiles selected according to structural design requirements.
• Helical Blades: Single- or multi-helix configurations with specified blade diameter, thickness, pitch, and spacing.
• Head Connections: Custom head plates, mounting brackets, channels, or threaded interfaces designed to match the supported structure.
• Material Selection: Carbon steel grades such as Q235B, Q355B, or ASTM A36 may be considered where appropriate. The exact grade, governing material standard, and required inspection documents must be confirmed for each order.
Technical Specification Table
|
Parameter |
Specification to Confirm |
|
Product type |
Steel helical ground screw or helical foundation pile |
|
Shaft |
Profile, outside diameter, wall thickness, and overall length |
|
Helical blades |
Diameter, thickness, pitch, quantity, and spacing |
|
Steel grade |
Specified grade and applicable material standard |
|
Head connection |
Plate dimensions, hole pattern, bracket design, and interface requirements |
|
Surface protection |
Hot-dip galvanizing or another specified coating system |
|
Design requirements |
Tension, compression, lateral loads, and applicable design criteria |
|
Inspection |
Dimensional, welding, material, and coating checks required by the order |
Selection Considerations
Shaft geometry, blade configuration, embedment depth, and connection design should be evaluated together. A change in one parameter may affect structural resistance, installation torque, soil interaction, or connection compatibility.
Manufacturing & Quality Control
Manufacturing and inspection requirements should be defined against approved drawings, material specifications, and the agreed quality plan.
Material Verification: Confirm steel grade and incoming material documentation against the purchase specification. Material certificates can be supplied when available and included in the order requirements.
Shaft and Helix Fabrication: Cutting, forming, assembly, and welding are performed according to the confirmed product design and applicable production procedures.
Dimensional Inspection: Shaft dimensions, blade geometry, overall length, and head connection features can be checked against the approved drawings and specified tolerances.
Weld Inspection: Visual inspection and additional non-destructive testing can be specified according to project requirements, applicable acceptance criteria, and the agreed inspection plan.
Batch Traceability: Material identification and production records should be maintained to the extent defined by the supplier's traceability system and the order requirements.
Inspection Documentation: Required records, inspection reports, and material certificates should be agreed upon before production begins.
Surface Protection & Corrosion Considerations
Hot-Dip Galvanizing: A commonly specified corrosion protection option for steel ground screws used in outdoor environments. The applicable coating standard and acceptance requirements should be confirmed for the product and project.
Applicable Standards: ISO 1461 and ASTM A123/A123M may be relevant to hot-dip galvanized coatings, depending on the component, fabrication method, and applicable specification. Confirm the appropriate standard before placing an order.
Buried-Service Conditions: Soil resistivity, pH, moisture, chemical content, and other site conditions can affect corrosion behavior. Coating selection should reflect the expected exposure environment.
Design Life: A target service life should be established by the project design team based on site conditions, structural requirements, and the specified corrosion protection system. Galvanizing alone does not guarantee a particular service life.
Custom Manufacturing & Bulk Supply
Drawing-Based Production:
Submit CAD or PDF drawings showing dimensions, tolerances, blade geometry, connection details, and material requirements for technical review.
Project-Specific Configurations:
Custom shaft dimensions, blade arrangements, head connections, and surface protection can be evaluated for manufacturing feasibility.
Order Planning:
MOQ, production lead time, sampling arrangements, and batch capacity should be confirmed according to product complexity, order volume, and current production conditions.
Export Packaging:
Packaging can be specified to protect components and coated surfaces during handling and transport. Bundling, separation materials, pallet requirements, and loading arrangements should be agreed upon before shipment.
Documentation Requirements:
Confirm whether the order requires material certificates, dimensional inspection reports, coating records, third-party inspection, or other project documentation.
FAQ
RFQ Checklist & Technical Review
For an accurate quotation and preliminary feasibility review, please provide the following information.
|
RFQ Item |
Information Required |
|
Application |
Solar mounting, fencing, infrastructure, or other intended use |
|
Project location |
Country, site conditions, and relevant environmental exposure |
|
Product drawings |
CAD/PDF drawings, dimensions, tolerances, and connection details |
|
Material |
Required steel grade and material documentation |
|
Soil information |
Available geotechnical report or soil description |
|
Design loads |
Required tension, compression, and lateral loads |
|
Installation |
Required embedment depth, installation equipment, and applicable torque limits |
|
Corrosion protection |
Required coating system and project design-life criteria |
|
Order details |
Quantity, expected repeat orders, delivery destination, and required delivery date |
|
Quality requirements |
Applicable standards, inspection plan, acceptance criteria, and required certificates |
Request a Technical Review and Quotation
Send your drawings, project specifications, estimated quantity, and delivery requirements for review. Technical feasibility, manufacturing tolerances, applicable standards, inspection scope, and commercial terms should be confirmed before order acceptance.
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