As commercial and industrial rooftop solar projects continue to grow worldwide, TPO/PVC roofing systems have become increasingly popular due to their lightweight structure, waterproof performance, and long service life. To match these roofing systems, specialized TPO/PVC solar mounting bases are designed to provide secure installation while maintaining the integrity of the waterproof layer. Modern TPO/PVC solar mounting solutions are generally divided into three main categories: 1. Flexible PV Mounting System (No-Drilling Type) 2. Medium / Mini TPO/PVC Mounting System – Rivet Nut Fixing 3. Heavy-Duty TPO/PVC Mounting System – Rivet Nut / Disc-Fastened Type These systems are suitable for single-layer, double-layer, and multi-layer flexible roofing structures. Flexible PV Mounting System (No-Drilling) The no-drilling flexible mounting base is specially designed for membrane roofs where roof waterproof integrity is a key concern. Instead of penetrating the roof, the mounting base is directly welded onto the waterproof membrane through hot-air welding technology. This solution offers several advantages: · No roof penetration, reducing leakage risk · Seamless integration with TPO/PVC waterproof membrane · High weather resistance and long-term durability · Lightweight structure suitable for flexible roofs The mounting base usually consists of a weather-resistant PVC/TPO injection-molded base combined with an aluminum structure, forming a rigid-flexible integrated system. However, no-drilling systems are generally not recommended for coastal areas or regions with extremely high wind loads, because wind uplift resistance requirements are much higher. In such projects, medium-duty or heavy-duty fixing solutions are often preferred. Medium & Heavy-Duty TPO/PVC Mounting Systems For projects requiring higher structural strength and wind resistance, medium-duty and heavy-duty systems are commonly used. These systems typically use: · 304 stainless steel mounting bases · Rivet nut fixing systems · Disc-fastened systems · Hot-air welded waterproof integration By combining mechanical fixing with waterproof membrane welding, the system achieves both excellent structural stability and waterproof reliability. Such systems are widely used in: · Industrial metal roofs · Single-ply membrane roofing systems · TMP integrated roofing systems · Lightweight steel structure roofs Typical Application Scenarios TPO/PVC solar mounting systems are suitable for various rooftop conditions, including: · Concrete roofs with fully bonded waterproof membranes · Light steel structure roofs · Integrated tile roofing systems · Industrial and commercial flat roofs The key requirement is that the roof surface must already have a waterproof membrane installed before mounting construction begins. Professional Installation Process A standard installation procedure usually includes: 1. Roof layout and positioning 2. Roof surface cleaning 3. Hot-air welding of the mounting base 4. Aluminum ...

With the peak season approaching, factory orders are surging. If you have any upcoming needs or projects of solar mounts in the pipeline, now is the time to act. Don't wait until it's too late – secure your orders while we still have availability. CORIGY SOLAR more professional and flexible solar mounting solutions waiting for you here! CONTACT US! Above news from CORIGY SOLAR Sales & Marketing department Phone: +0086-592-6883200 E-mail: sales@corigy.com

The material of the supporting structure of a photovoltaic carport directly determines its service life, load-bearing capacity, maintenance cost and applicable scenarios. Carbon steel and aluminum alloy are the two most mainstream materials on the current market, with significant differences in performance, cost, environmental protection and other dimensions. The following is a detailed summary of their respective advantages and disadvantages to provide a reference for material selection. I. Carbon Steel Photovoltaic Carport Carbon steel photovoltaic carports mainly adopt carbon steel grades such as Q235B and Q355B as the core support materials, which are usually treated with anti-corrosion processes including hot-dip galvanizing, cold galvanizing or spraying. They are the mainstream choice for industrial areas, large parks and other scenarios, occupying about 75%-80% of the market share, with core advantages in structural strength and cost performance. Advantages High load-bearing capacity and outstanding span performance. Carbon steel features high yield strength (approximately 235MPa for Q235 and 355MPa for Q355), with tensile strength ranging from 400MPa to 550MPa, far exceeding that of aluminum alloy. A single steel column can bear a load of over 500kg, enabling a large-span design of more than 12 meters without excessive intermediate columns. It saves site space and is compatible with heavy-duty photovoltaic modules, suitable for large-area solar panel arrangement to improve power generation efficiency and land utilization rate. Some products can withstand wind speeds up to 60m/s, reaching a wind resistance grade of Level 10 to 12, and deliver strong snow load resistance, meeting the application demands of snowy regions in northern China. Low cost and superior cost performance. The raw material price of carbon steel is only 1/3 to 1/2 of that of aluminum alloy. With mature rolling, welding and other processing technologies, component costs are low in mass production. The overall cost of the support system is about $11.5–21.4 per square meter, which greatly reduces the initial investment of photovoltaic carport projects. It is especially suitable for large-scale and cost-sensitive projects, such as industrial logistics parks and desert photovoltaic carport projects. Flexible processing and high customization. Carbon steel has excellent welding performance. Special-shaped components (such as long-span beams and corner brackets) can be customized according to site requirements, adapting to complex terrain such as mountains and sloped land. It can also be flexibly matched with concrete foundations and other metal materials, delivering strong construction adaptability. Disadvantages Poor corrosion resistance and regular maintenance required. Carbon steel is prone to oxidation and rusting by nature. Even with hot-dip galvanizing (zinc coating thickness ≥ 85μm) or surface spraying treatment, rusting issues still easily occur in harsh environments ...

Recently, a client from Thailand asked an interesting question during our discussion about solar mounting systems “How thick should the galvanization and pipe wall of a ground screw be to ensure a long service life?” This is actually a very important topic for solar ground mounting projects, especially in regions with different soil conditions and climates. Here are a few key factors that determine the durability of solar ground screws. 1. Hot-Dip Galvanization Thickness For solar mounting ground screws, hot-dip galvanization is essential to prevent corrosion. Typical standards in the industry: ≥ 80 μm – Standard protection for most normal environments ≥ 100 μm – Recommended for coastal or humid areas ≥ 120 μm – Suitable for highly corrosive environments In general, 80–100 μm galvanization can provide 25–40 years (or even longer) of corrosion protection under normal soil conditions. However, the actual lifespan also depends heavily on soil chemistry and drainage conditions. 2. Pipe Wall Thickness of the Ground Screw The wall thickness of the steel pipe affects both structural strength and long-term durability. Common specifications used in solar projects is diameter typical wall Thickness60 mm2.5–3.5 mm76 mm3.0–4.0 mm89 mm3.5–4.5 mm For large solar plants or areas with high wind loads, thicker walls are usually recommended. 3. Soil Conditions Matter The soil environment can significantly influence corrosion speed. Normal soil (neutral pH) ： Standard galvanization usually works well. Clay or wet soil： Higher galvanization thickness recommended. Salty or coastal soil ： Thicker galvanization + larger safety factor. Rocky soil : Focus more on structural strength than corrosion. 4. Installation and Drainage Even a well-designed ground screw can fail prematurely if installation conditions are poor. Key recommendations is ● Avoid long-term water accumulation. ● Ensure proper drainage around the foundation. ● Select the correct screw length based on soil conditions. ● Follow installation torque recommendations. 5. Why Ground Screws Are Widely Used in Solar Projects Compared with traditional concrete foundations, ground screws offer several advantages: ● Faster installation. ● No concrete curing time. ● Environmentally friendly. ● Easy removal and recycling. ● Suitable for most soil types. This is why they are increasingly popular in utility-scale solar farms and commercial PV installations. The service life of a solar ground screw is not determined by a single factor. It depends on galvanization thickness, pipe wall thickness, soil conditions, and proper installation.In our recent solar projects, we typically recommend 80–100μm hot-dip galvanization for ground screws, depending on the soil environment and project lifetime requirements.Proper material selection and corrosion protection are essential to ensure that the foundation can match the 25+ year lifespan of a solar power plant. Feel Free to contact us if you want to have your suitable ground screw. ...

Corigy is an outstanding manufacturer of photovoltaic mounting structures.It boasts an elite engineering and design team. From the selection of solar mounting solutions to detailed drawing design, we fully take into account factors such as cost efficiency, structural safety, and ease of installation of solar mounting for our customers. While ensuring the structural safety of the mounting system, Corigy strives to provide customers with the most cost-effective solar mounting solutions. Even more commendably, our engineer usually gives some professional suggestions on safety of the solar mounting structures, these suggestions are so valuable and indispensable for a project. We have a successful case of hot-dop galvanizing solar mounting where we helped a customer to reduce the mounting costs from $90/KW to $45/KW. In the customer’s original design, many rectangular tubes were used for diagonal bracings and beams. Our engineers simplified the design by adopting Cee steel for beams and diagonal bracings, significantly cutting costs. As the labor cost in the country is very expensive, so we suggested customer to use foundation of piles ramming into the ground. The type of piles in this project are U steel instead of normal Cee steel. This is because the maximum thickness of Cee steel is not more than 3 mm. But 3 mm thickness Cee steel can not withstand the impacting force generated from large pile driver machine, so we used U shape steel with thickness from 6-8 mm. We suggested customer to use Lock Nut for the bolts in one special part, as there is a small gap between two U shape steel, so there is no friction here. The screws in this part are prone to loosening and falling off under the gravity of the panels and wind speed over time. If the screws  get loosening or falling off, the solar mounting structure won't be stable. So our engineer suggested to use the lock nut. This kind of nut is embedded with a nylon ring; when the bolt is screwed in, the nylon deforms under compression, gripping the threads to provide constant friction. We are very happy that customer accepted all of our suggestions. Order is under processing now. Except this case , we also provide customers with pre-assembled components to improve on-site installation efficiency and lower labor costs. Our extensive product range: We manufacture mounting systems for ground-mounted, rooftop, and carport solar installations. We do both aluminum and hot-dip galvanized steel ground mounting, metal sheet roof and flat roof. Our carport design Corigy offers two designs for solar carports: the Y-type carport and the single-column carport. Both types combine practicality with an attractive appearance. Corigy designs the carport structure in accordance with the customer’s requirements, including maximum wind speed, snow load, and panel dimensions. The primary material is hot-dip galvanized Q235B steel. Each parking space generally has a width of 3 meters and a depth of 5 meters. We can also de...

Why Choose Aluminum Solar Mounts for PV Projects? Solar mounting systems are key structures that support photovoltaic modules, and their materials directly affect system safety, lifespan, and economy. Among various materials (hot-dip galvanized steel, stainless steel, ZAM coated steel, composite materials), aluminum has become the mainstream choice for distributed roof projects due to its excellent comprehensive performance, especially suitable for scenarios with limited load-bearing capacity, humid/salt spray environments, and requiring quick installation. Let's analyze the specific advantages of aluminum solution: *Lightweight: Aluminum has a density of only 2.7 kg/dm³ (steel has 7.9 kg/dm³), which is lightweight but has a high strength to weight ratio, reducing roof load pressure. Especially suitable for rooftop distributed photovoltaic projects. *Anti natural corrosion: Aluminum can react with oxygen in the air to form a dense alumina protective layer on the surface, enhancing the corrosion resistance of aluminum profiles. *Balanced voltage: Aluminum profiles have excellent conductivity, which enables them to better conduct weak currents generated in photovoltaic support systems due to various reasons. *Easy to form and process: easy to saw, drill, punch, and fold; It can be molded into any cross-sectional profile through extrusion technology, suitable for different angles, terrains, and roof shapes. *Low temperature resistance: Ordinary steel, especially welding areas, are fragile and brittle in low temperature environments, while aluminum have increased strength at low temperatures. *Environmentally friendly and easy to recycle: Waste aluminum brackets can be recycled for reuse. *Easy installation: The accessories of the aluminum solar brackets are very simple, and the installation is also fast and easy, which can greatly shorten the construction period. *Long service life: The service life of aluminum photovoltaic brackets is about 25 to 30 years. Although the cost of aluminum is higher than that of steel, its full cycle cost (LCC) brought by anti-corrosion treatment free, low operation and maintenance, and long service life is more advantageous. CORIGY has over fifteen years of experience in solar mounting solutions, especially in the design of aluminum mounting, which have been repeatedly praised by customers. CORIGY's professional product design enables the assembly of solar photovoltaic bracket systems with only a small number of accessories, without the need for other drilling or welding, and can be quickly assembled on the construction site, effectively improving installation efficiency and shortening the construction period. CORIGY’s aluminum solar mounts has the characteristics of light weight, beautiful appearance, simple installation, and strong corrosion resistance. CORIGY SOLAR more professional and flexible solar mounting solutions waiting for you here! CONTACT US! Above news from CORIGY SOLAR Sales & Marketing department ...