Your complete screw pile resource centre
Certifications, technical documents, FAQ and free design training in one place.
Every pile is manufactured in Finland
Certified production, traceable materials and trained installers. From factory to site.
Product datasheets
Technical datasheets with load tables for 256 products. Filter by tube, wall thickness or helix, or search by load capacity.
| Series | Tube Ø (mm) | Wall (mm) | Helix Ø (mm) | Helices | Rk,str (kN) | Mmax (kNm) | Datasheet |
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Calculators & Planning Tools
Free online tools for preliminary planning of your screw pile project. Select the calculator that matches your question.
Capacity Calculator
Estimate the axial capacity of PRO and HELIX screw piles based on soil type, pile size and embedment depth. Includes a pile selector tool.
Open calculatorCost Calculator
Get a price estimate for your screw pile foundation based on project size, pile type and site conditions.
Coming soonProduct specifications at a glance
Our two product ranges cover everything from lightweight garden projects to heavy industrial infrastructure. Select the range that matches your project requirements.
PRO Screw Piles
Machine-installed piles for structural and industrial applications. Designed for high-load projects including buildings, solar farms, substations and infrastructure.
- Tube diameter60.3 – 323.9 mm
- Helice diameter200 – 1,000 mm
- Standard lengths1.5 – 12 m
- Load capacityUp to 1,000 kN
- InstallationMachine (excavator)
- Warranty100 years
HELIX Screw Piles
2nd generation screw pile with cast steel head for effortless manual or machine installation. Fences, jetties, garden rooms, terraces and small cottages.
- Tube60.3 × 2.9 mm / 60.3 × 5.0 mm
- Helice diameter160 mm
- Standard lengths0.7 – 3.2 m
- Steel gradeS420
- InstallationHand / machine
- Warranty50 years
Brochures and technical documents
All materials in PDF format. Download directly or browse the datasheet archive.
Screw Pile Selection Guide
Choose the right pile type and size based on your soil conditions, loads and building type.
Download PDFDigga Installation Equipment
Product brochure: pile drivers and auger drives for professional use. Specs and model range.
Download PDFHELIX Product Brochure
Product overview, specifications, installation methods and range. 4-page brochure.
PRO Product Brochure
Screw pile range for infrastructure, solar, and commercial projects. Full specifications.
Technical Datasheets
Load tables and technical specifications for 256 products. Filter and download directly.
Request datasheetsAnswers to common questions
25 years of experience distilled into straight answers.
What kinds of construction projects can use screw pile foundations?
Screw piles support a wide range of structures. On the lighter end: terraces, fences, garden sheds, greenhouses, flagpoles and boardwalks. Mid-range: residential houses, garages, extensions, noise barriers and retaining walls. Heavy-duty: industrial halls, solar farms, BESS installations, substations, pipelines, 5G masts, bridges and power line supports.
Our product range covers everything from small hand-installed piles for garden projects to large machine-installed piles for industrial infrastructure.
What is the difference between hand and machine installable screw piles?
Hand-installable screw piles (our HELIX range) are designed for lighter loads and can be installed using a crowbar or one of our electric pile drivers. They are ideal for DIY projects such as terraces, garden structures, fences and small sheds.
Machine-installable screw piles (our PRO range) are designed for structural loads and require a hydraulic auger mounted on an excavator or wheel loader. They are used for buildings, industrial infrastructure, solar farms and other projects where high load capacity is required.
The key differences are load capacity, installation method, tube and helix dimensions, and the type of surface treatment applied.
Do building authorities accept screw pile foundations?
Yes. Screw piles are accepted by building authorities across Europe, the USA and beyond when designs, calculations and installation meet industry standards. Paalupiste provides all required documentation: structural calculations, quality control records, material certificates and installation logs.
If your local authority has questions, our engineering team can supply the technical documentation they need.
What types of soil are most favourable for screw piles?
Clay and sandy soils are the most common and favourable soil types for screw piles. They also perform well in peat, moraine, soft ground and swampy conditions. The helical flange pulls the pile into the ground and locks it in place, which gives excellent bearing capacity even in soils where driven piles or concrete would require much deeper installation.
We have extensive experience with solar farm foundations built on peatland and boardwalk foundations in swampy terrain. If you have soil investigation data for your site, send it over and we can confirm suitability quickly.
Why do some screw piles have more than one helix?
Additional helical flanges increase both compression and tension resistance, particularly in cohesive soils like clay. By adding flanges, the pile can achieve higher bearing capacity with a shorter installed length. This can be a significant advantage when the load-bearing soil layer is relatively close to the surface or when pile extraction resistance (tension) is a design requirement.
How deep should screw piles be installed?
Installation depth depends on where the load-bearing soil layer is located. Piles must be screwed deep enough to reach soil with sufficient bearing capacity. In practice, this can range from 1.5 metres in firm ground to 10+ metres in soft soils.
Torque monitoring during installation confirms when the pile reaches adequate resistance. When the required depth exceeds a single pile length, extension sections can be bolted or welded on. Our engineering team can recommend target depths based on your site's soil investigation data.
How close to each other should screw piles be installed?
The minimum spacing between screw piles depends on the helix diameter and soil conditions. As a general guideline, the centre-to-centre distance should be at least three times the largest helix diameter. This prevents the soil stress zones of adjacent piles from overlapping, which would reduce bearing capacity.
For specific projects, our engineering team calculates the optimal spacing based on loads, pile sizes and soil data.
Does the pipe need to be filled with concrete after installation?
Usually not. Concrete filling is only recommended when the groundwater level is within one metre of the surface. In that case, filling the tube with concrete, polyurethane foam or sand improves structural integrity and helps prevent internal corrosion. For the vast majority of installations, filling is unnecessary.
What surface treatment is applied to screw piles?
HELIX piles (60.3 mm tube) are delivered hot-dip galvanized with a 110 to 140 micron zinc coating according to EN ISO 1461. This provides long-term corrosion protection and a 50-year warranty.
PRO piles use thicker wall sections with a built-in corrosion allowance instead of galvanization. The extra steel thickness is calculated to provide the required structural capacity even after decades of natural corrosion. This approach delivers a 100-year warranty, with designs available for up to 300-year corrosion resistance.
PRO series: 100-year warranty. Corrosion resistance engineered up to 300 years through material thickness design.
How long do screw piles last?
HELIX piles carry a 50-year warranty. PRO piles are backed by a 100-year warranty. For projects that require even greater durability, corrosion resistance can be engineered to last up to 300 years by increasing material thickness and applying advanced surface treatments.
All pile designs are built with corrosion resistance as a primary engineering consideration.
Learn to design screw pile foundations with confidence
Free training for structural engineers, contractors and construction professionals.
Train yourself and your team free of charge. Sessions cover technical aspects of pile sizing, load calculations, soil assessment and installation quality control.
- Screw pile design principles and load calculation methods
- Soil assessment and pile selection for different ground conditions
- Installation monitoring and quality assurance procedures
- European standards and certification requirements
- Hands-on examples from real projects across Europe
Free of charge
On-site or online training sessions tailored to your team's experience level