High-strength ZAM steel solar mounting structures for ground mount, rooftop, coastal, and offshore projects. 15–25% weight savings over Q235 steel. Proven in 400MW offshore installations. Reduces project LCOE by 3–7%.
Stronger steel means lighter structures — and lighter structures mean lower cost per kilowatt from material sourcing to project commissioning. Here is what our customers achieve on utility-scale projects compared to standard Q235 galvanized steel:
From utility-scale ground mount to rooftop carports and offshore pile structures — engineered for every project profile.
Driven pile or ballasted base with fixed tilt angle. The standard for utility-scale solar farms in semi-arid, grassland, and desert environments.
Horizontal single-axis tracker (HSAT) for up to 25% more energy yield. ZAM torque tubes and drive posts with minimal maintenance requirements.
Non-penetrating ballasted rail system for flat commercial and industrial rooftops. Lightweight ZAM rails minimize rooftop load per panel.
Driven steel pile structure for tidal flats, coastal reclaimed land, and near-shore installations. ZAM coating for ISO 9223 C4–C5 environments.
Solar carport and building-integrated canopy structures. ZAM primary beams with architectural finish options.
Custom cold-rolled ZAM purlin, rail, and clamp profiles manufactured to customer drawings. Supplied to solar EPC companies and tracker OEMs.
Key decision factors for EPC procurement managers on utility-scale and industrial solar projects.
Aluminum extrusion offers low weight but at 3–4× the cost per tonne versus ZAM steel. For ground-mount systems where corrosion resistance is the key requirement, ZAM high-strength steel delivers 90% of aluminum's corrosion protection at 25–30% of the cost.
| Parameter | S750HLD+ZMA (Our Product) | Q235 Hot-Dip Galvanized | 6005A Aluminum Alloy |
|---|---|---|---|
| Yield Strength | ≥750 MPa | ≥235 MPa | ≥245 MPa |
| Material Weight vs Q235 | −15 to −25% (same load) | Baseline | −60% (density advantage) |
| Relative Cost per kW | Low (baseline +10–20%) | Lowest baseline | 3–4× steel cost |
| Salt Spray (ISO 9227) | ≥5040 hrs | ~1000 hrs | ≥6000 hrs (anodized) |
| Self-Healing Coating | Yes | Partial | Yes (native oxide) |
| Coastal Suitability (C4–C5) | Excellent | Poor without extras | Excellent |
| Weldability | Good | Good | Specialist only |
| Estimated Service Life | 30–50 years | 15–20 years | 30–50 years |
| Best Use Case | Ground mount, coastal, large-scale | Budget inland projects | Rooftop, small commercial |
Direct supply of S750HLD+ZMA and S550GD+ZMA coils from Shougang Group — China's largest ZAM producer. Mill certificates and third-party test reports provided.
In-house structural calculations for wind/snow/seismic loading. Certified PE-stamped packages available for permit submission in target markets.
Reference projects in coastal China (ZAM offshore tidal flat), Middle East desert (high UV, sand abrasion), and tropical Southeast Asia (high humidity, cyclone zones).
Three production bases (Jinan, Chongqing, Wuhan). Scalable for 10 MW to 500 MW project supplies. Pre-assembled kits shipped container-ready.
Pre-sorted, bundle-packed kits with CNC-punched components, bolts included. Reduces on-site storage, labour, and installation errors.
Commercial invoice, packing list, HS codes, FORM A/CO, mill certificates — everything your customs broker needs for duty-preference under applicable trade agreements.
Key questions from solar developers, EPC contractors, and O&M managers.
We use S750HLD+ZMA (750 MPa yield strength) and S550GD+ZMA (550 MPa yield strength) Zinc-Aluminum-Magnesium coated high-strength steel. These grades are 2–3× stronger than standard Q235 structural steel, allowing 15–25% material weight reduction per kilowatt of installed capacity. Steel is exclusively supplied by Shougang Group with full mill certification traceability.
Based on project data, ZAM high-strength steel mounting systems reduce total CAPEX by 5–8% compared to standard Q235 galvanized steel through four levers: 15–25% less steel tonnage, lower freight costs per kW, faster installation due to fewer components, and elimination of maintenance repainting costs over a 25-year project life. This typically translates to a 3–7% reduction in project LCOE.
Yes. ZAM-coated steel exceeds 5040 hours of salt spray testing (ISO 9227) — 5× the performance of hot-dip galvanized alternatives. The self-healing Mg-enhanced zinc coating is designed for ISO 9223 C4 and C5 corrosivity environments. Our CGN Zhaoyuan 400MW offshore project confirmed zero corrosion failures after 3 years of operation on China's Shandong coast.
We supply 6 product categories: fixed-tilt ground mount with driven piles or ballasted bases, single-axis horizontal trackers (HSAT), rooftop ballasted rail systems, rooftop penetration-mount systems, coastal/offshore pile-driven structures, and carport and BIPV support structures. Custom profiles and OEM cold-rolled section fabrication are available to customer drawings.
We design to IEC 61215, AS/NZS 1170.2, EN 1991-1-4, ASCE 7, and project-specific wind maps. Our structural engineering team provides certified calculation packages for local building authority submission. Designs have been validated for sites with basic wind speeds up to 55 m/s and ground snow loads up to 1.5 kN/m². IBC and local PE-stamp coordination is available for US projects.
Share your project specs — capacity, location, ground conditions, and target LCOE — and our engineering team will send a customised material proposal and cost comparison within 48 hours.
