Photovoltaic (PV) mounting structures are essential components in solar power systems, used to support and secure solar panels in fixed or tracking positions. These structures must withstand harsh outdoor conditions such as UV radiation, temperature fluctuations, wind, snow, and rain over a 20+ year lifespan. Therefore, material selection is critical.
Among the many material choices, 304 stainless steel pipes have become one of the most reliable and widely used solutions for solar panel mounting systems due to their excellent mechanical and anti-corrosion properties, cost-effectiveness, and easy fabrication.
304 stainless steel pipes are used for photovoltaic (PV) mounting structures
1. Excellent Corrosion Resistance
304 stainless steel contains 18% chromium and 8% nickel, providing excellent resistance to rust and corrosion in most atmospheric environments - including coastal areas with moderate salt exposure. This ensures a long service life without frequent maintenance.
2. High Strength and Durability
304 stainless steel pipes have a high tensile strength (~500 MPa) and yield strength (~215 MPa), making them strong enough to withstand external loads such as wind and snow pressure on solar panels.
3. Weather and UV Resistance
Unlike galvanized steel or aluminum, 304 stainless steel maintains its mechanical properties and aesthetic appearance under prolonged UV exposure and thermal cycling.
4. Ease of Fabrication and Installation
Thanks to its good weldability and formability, 304 stainless steel pipes can be easily processed into frames, brackets, and supports - speeding up construction on-site and reducing labor costs.
| Parameter | Typical Value |
|---|---|
| Diameter Range | 25.4 mm – 114.3 mm (1" – 4.5") |
| Wall Thickness | 1.5 mm – 5.0 mm |
| Surface Finish | 2B / Polished / Pickled |
| Length | 6m / Custom |
| Standards | ASTM A312 / A554 / EN 10296-2 |
| Tolerance | ±0.1 mm on OD / wall thickness |
Choosing 304 stainless steel pipes for your photovoltaic mounting structures ensures long-term performance, lower maintenance costs, and environmental compliance. With GNEE's comprehensive product range, technical support, and fast delivery, you can streamline your solar projects with confidence.
As a leading stainless steel solution provider, GNEE Steel offers:
✅ Large inventory of 304 stainless steel round and square pipes in standard and custom dimensions
✅ Surface finishes optimized for outdoor durability (2B, polished, brushed, or passivated)
✅ Cut-to-length and CNC fabrication services for frames and brackets
✅ Quick delivery for bulk orders globally
✅ Material certificates (EN 10204 3.1) and full traceability for solar EPC projects
✅ Optional upgrade to 316L for marine or high-chloride environments
Contact GNEE today to request a quote or discuss custom solutions for your PV mounting system needs.
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