Shandong Pinjie Hot-Dip Galvanized Steel Mountings Power 100MW Huarun Pingding Solar Project, Ensuring 25+ Years of Stable Operation
Published: January 17, 2025 | Last Updated: May 26, 2026 (Update Note: Added full-capacity grid connection data and 2026 latest industry standard compliance details) | Author: Tao Wang (Senior Structural Engineer, Shandong Pinjie Materials, 11 years of solar mounting design experience, Technical Lead for this project)
Shandong Pinjie Materials (PINJIE), a professional manufacturer specializing in R&D and production of hot-dip galvanized steel solar mounting systems, is proud to announce that the 100MW Huarun Pingding Photovoltaic Project, equipped with our full customized mounting solutions, successfully achieved full-capacity grid connection on August 30, 2025. As of May 2026, the system has been operating stably with zero structural failures. This successful delivery of a mountainous ground-mounted centralized PV project once again validates the exceptional performance of our hot-dip galvanized steel mountings in complex terrains and harsh environments, setting a benchmark for solar mounting selection in the global PV industry.
Project Overview and Mounting Selection Challenges
The 100MW Huarun Pingding Photovoltaic Project is a key energy initiative of Pingding County, Shanxi Province in 2024, with a total investment of 450 million RMB. Located in the hilly areas of Zhangzhuang Town and Donghui Town, the project features an elevation difference of 120 meters and a maximum slope of 35 degrees. The site consists of 49 power generation units, 313 units of 320kW inverters, 8747 PV strings, and a newly built 220kV booster station.
Unlike flat-ground solar farms, mountainous PV projects face multiple challenges: undulating terrain, complex geological conditions, uneven wind and snow load distribution, and winter freeze-thaw cycles. After three rounds of technical proposal reviews and rigorous material performance tests, the project owner rejected aluminum alloy mounting solutions and selected Shandong Pinjie's ground-mounted galvanized steel solar brackets as the core support structure for the entire PV array. This decision was based on three key factors: first, the high strength of hot-dip galvanized steel meets the extreme load requirements of mountainous areas; second, the 80μm standard zinc coating provides corrosion protection that fully covers the 25-year design life of the power plant; third, our customized processing capabilities perfectly adapt to complex mountain terrains, significantly shortening the construction period.
Core Technical Advantages of Shandong Pinjie Hot-Dip Galvanized Steel Mountings
Our technical team intervened 3 months in advance to optimize the mounting design in collaboration with Huarun Power and PowerChina Construction. We adopted a modular prefabrication process, where all components are cut, drilled, and galvanized in the factory, requiring only bolted connections on-site without any welding work.
1. Ultra-High Load-Bearing Capacity for Extreme Mountain Conditions
The Q235B grade hot-dip galvanized steel mountings provided for this project have a tensile strength of 375-460MPa and a yield strength of ≥235MPa, which is 1.7 times higher than 6061-T6 aluminum alloy. Based on the local meteorological conditions of Pingding County (maximum snow depth of 25cm in winter and 10-level strong winds), we optimized the column spacing and beam cross-sectional dimensions through finite element analysis to ensure structural stability under extreme weather.
2. Standardized Anti-Corrosion Process for Full Lifecycle Reliability
All mountings are coated with an 80μm standard hot-dip galvanized layer, which has passed the ASTM B117 1000-hour salt spray test conducted by SGS (Test Report No.: SGS-CN-2024-03127). This process not only ensures galvanized steel solar mounting durability in high humidity environments but also effectively resists freeze-thaw cycles and UV aging in northern China. According to the 2024 White Paper on Corrosion Protection of Solar Mountings released by the Chinese Society for Corrosion and Protection, an 80μm zinc coating can provide more than 30 years of service life in northern inland environments, fully meeting the stringent requirements of long-term galvanized steel solar mounting applications.
3. Customized Design Solves Mountain Construction Difficulties
To address the problem of hard rock geology and difficult drilling at the project site, we optimized the foundation design by using screw piles instead of traditional concrete foundations. Combined with pilot hole drilling machines, the single-pile construction time was reduced from 2 hours to 15 minutes. Additionally, we designed adjustable-angle mounting connectors that adapt to different mountain slopes, eliminating the need for extensive site grading and protecting the local ecological environment.
Full-Scenario Hot-Dip Galvanized Steel Mounting Solutions
The successful application of the Huarun Pingding project is just a microcosm of our full-scenario adaptation capabilities. After 12 years of technical accumulation and project practice, our products have been applied to various PV scenarios worldwide, with a cumulative installed capacity exceeding 12GW:
In coastal tidal flat areas, our galvanized steel solar mounting for coastal areas adopts a customized thickened zinc layer (≥100μm) and sealing coating process to effectively resist salt spray corrosion, and has been operating stably for more than 10 years in multiple coastal projects in Zhanjiang, Guangdong and Zhangzhou, Fujian;
In northwest desert areas, our best galvanized steel solar mounting for desert areas features optimized surface treatment and wind-sand resistant structural design, providing excellent anti-abrasion performance, and has been successfully applied to large-scale desert PV power plants in Golmud, Qinghai and Jiuquan, Gansu;
In the commercial and industrial sector, commercial galvanized steel solar mounting systems have become the preferred solution for factory and warehouse rooftop PV due to their low cost, high reliability and fast installation, with a leading market share in China;
In the residential sector, our lightweight residential rooftop galvanized steel solar mounts control the mounting weight within 8kg/㎡ while ensuring structural safety, effectively reducing additional load on building roofs and gaining recognition from numerous residential users worldwide.
It should be noted that hot-dip galvanized steel mountings are not perfect. Compared with aluminum alloy, they are heavier, which increases transportation costs in remote areas; their corrosion resistance is slightly inferior to aluminum alloy in strongly acidic industrial environments. To address these issues, Shandong Pinjie has reduced transportation difficulties through modular split design and launched Zm-Al-Mg composite coating products to further improve corrosion resistance in special environments.
Project Progress and Customer Testimonial
As of January 2025, the civil works of the booster station had been fully completed, electrical equipment installation and commissioning reached 98.5%, PV field works completed 58%, collector line works completed 48%, and the transmission line was fully connected. After 8 months of intensive construction, the project achieved first grid connection in April 2025 and full-capacity grid connection on August 30, 2025.
The project manager of Huarun Power Pingding Project stated: "Shandong Pinjie's technical team participated deeply in the early stage of the project and put forward many optimization suggestions for mountainous terrain, effectively solving the difficulties in construction. The mounting products have stable quality and timely delivery, providing strong guarantee for the smooth grid connection of the project."
As of May 2026, Shandong Pinjie has established long-term cooperative relationships with well-known domestic energy enterprises including Huarun Power, SPIC, Huaneng Power and Datang Power. Relying on the complete metal material industry chain in Boxing, Shandong, we have 2 color coating production lines, 1 galvanizing line and 1 galvalume line, with an annual output of 500,000 metric tons, and our delivery cycle is 30% faster than the industry average. All products have passed ISO 9001, ISO 14001, ISO 45001 quality system certifications and SGS testing, complying with international standards such as ASTM, ISO and GB.
Frequently Asked Questions (FAQ)
Q: What warranty do you provide for your hot-dip galvanized steel mountings?A: We provide a 10-year product warranty and a 25-year performance warranty. During the warranty period, we will provide free replacement and repair services for mounting damage caused by product quality issues.
Q: How long is the installation cycle for mountainous solar mountings?A: For a 100MW mountainous PV project using our modular mounting system, the installation cycle is approximately 3-4 months under normal construction conditions.
Q: Does hot-dip galvanized steel mounting require maintenance in the later stage?A: Under normal environmental conditions, hot-dip galvanized steel mountings require no special maintenance. We recommend a visual inspection every 5 years, and timely repair if local coating damage is found.
Q: Can you provide customized mounting solutions?A: Yes, we have a professional technical team that can provide tailor-made mounting design and production services according to the project's terrain, climate, load and other conditions, supporting full specification customization including thickness, width and coating.
Q: What is the cost difference between hot-dip galvanized steel and aluminum alloy mountings?A: In the Huarun Pingding project, the hot-dip galvanized steel mounting solution saved approximately 42% of material costs compared to the aluminum alloy solution. For large-scale projects, this cost difference can be significant.
Q: What wind and snow loads can your mountings withstand?A: Our mountings can be customized to withstand wind speeds up to 12 levels and snow loads up to 50cm, meeting the requirements of most regions worldwide.
Contact Us
If you are planning a PV project, whether it is a large-scale ground power plant, commercial and industrial rooftop or residential distributed system, Shandong Pinjie can provide you with cost-effective and highly reliable hot-dip galvanized steel mounting solutions. Contact us now to get a free copy of the 2026 Solar Mounting Selection Guide (including regional coating thickness selection tables, cost comparison analysis and installation process details) and an exclusive project quote.
Phone: +86 13854673939
Email: kelly@ppgi-steel.com
Official Website: https://www.sino-galvanized.com
