Guide rails are the core load-bearing components of photovoltaic (PV) mounting systems, primarily used to secure and arrange solar PV modules; they are typically used in conjunction with fasteners such as clamps and bolts. Our comprehensive rail product line features two main material types—steel (hot-dip galvanized and Zinc-Aluminum-Magnesium alloy) and aluminum alloy—and encompasses various cross-sectional profiles, including H-rails, un-ribbed rails, and custom-shaped rails. These rails bear the load of the PV modules and transfer forces to the mounting posts or roof bases. They are suitable for distributed PV installations on color steel tile roofs and flat concrete roofs, as well as for PV carports and certain ground-mounted PV power plants.
Guide rails are available in various materials—such as aluminum alloy, Zn-Al-Mg alloy, and hot-dip galvanized steel—to suit diverse project conditions, including inland and coastal locations, high-salinity environments, sites with roof load limitations, and large-span power plants.
Includes standard C, H, and U-shaped profiles, lightweight un-ribbed profiles, and custom non-standard shapes, ensuring compatibility with both conventional projects and specialized retrofit applications.
Supports fixed-length cutting, CNC punching, and custom profile machining. We are not limited to standard off-the-shelf products and can manufacture components to meet specific project drawing requirements.
Guide rails, clamps (mid/end clamps), stainless steel fasteners, and grounding components are manufactured in-house. This ensures a high degree of compatibility between profiles and accessories, minimizing assembly errors on-site.
Standard specifications are stocked for rapid delivery; our factory boasts an annual capacity of 200,000 tons, capable of handling bulk supply for GW-scale power plants.
Eliminates the need to source separately from aluminum and steel factories. We provide the full range of rails and matching accessories, streamlining the entire procurement process.
| Parameter Item | Technical Specification |
| Optional Base Materials | 6063-T5 aluminum alloy / S350GD Zn-Al-Mg steel strip / Q355 hot-dip galvanized steel |
| Surface Treatment | Anodizing / Zn-Al-Mg coating / Hot-dip galvanizing |
| Main Section Types | H-type, C-type, U-type, lightweight unreinforced, custom special-shaped sections |
| Profile Wall Thickness | Aluminum alloy: 1.2-2.0mm; Steel: 1.0-1.5mm (customizable) |
| Standard Delivery Length | 4m, 6m; custom cutting to any length available |
| Compatible Modules | Full range of monocrystalline, PERC, TOPCon PV modules |
| Supporting Accessories | Mid clamps, end clamps, stainless steel fasteners, grounding components |
| Application Scenarios | Color steel tile roofs, concrete rooftops, ground-mounted power stations, PV carports, renovated special-shaped PV projects |
| Applicable Standards | GB Chinese Standard, EN European Standard; material certificates available |
Material grades are verified for every batch of guide rails to ensure no recycled or impure materials are used;
Dimensional tolerance checks and spot checks on anodized coating thickness ensure surface treatment meets standards;
3. Mechanical property reports for profiles are available upon request;
4. Third-party test reports (e.g., TUV, SGS) can be provided to meet requirements for overseas project bidding and customs declarations.
We assist with model selection of guide rails based on project-specific wind and snow loads, roof conditions, and local climate; physical samples can be sent for verification of material, cross-section, and surface finish; we provide project bidding documentation, including product specifications and test reports; for overseas clients, we offer recommendations tailored to local standards.
For custom orders, we generate processing drawings for client sign-off before production begins; during production, we provide photos or videos of raw material inspection, profile processing, and finished product spot checks so clients can track progress; shipments include a complete packing list and material certification; we offer various packaging options, including rain-proof stretch wrapping to prevent damage during transit; for domestic orders, we arrange direct truck delivery to the project site; for export orders, we assist with full customs documentation and support various trade terms (e.g., FOB).
If damage (such as dents or deformation) occurs during transit, we quickly assess the situation upon receipt of verification photos and arrange for replacement parts or a mutually agreed solution; we provide comprehensive installation guides, including diagrams and key installation tips; our technical team offers remote support to resolve any issues encountered during installation.
Our factory is located in the Daqiuzhuang Industrial Base in Jinghai, Tianjin, close to the Port of Tianjin; this allows for direct truck delivery to domestic project sites and convenient customs clearance and shipping for export orders. We maintain long-term, stable partnerships with aluminum extrusion plants, ensuring a reliable supply of raw materials and guaranteeing that material grades are never substituted. We implement comprehensive quality control throughout the entire process, conducting multiple inspections from raw material intake to the dispatch of finished goods. We simultaneously manufacture steel rails (H-rails, special-profile rails, and ribless rails), allowing customers to source steel mounting accessories and aluminum alloy rails in a one-stop shop; this reduces the communication costs associated with managing multiple suppliers, and we handle orders of all sizes.
A: Accessories are interchangeable if the cross-sectional slots match; however, direct contact between steel and aluminum causes electrochemical corrosion, so insulating gaskets must be installed when mixing materials.
A: Profiles are covered with protective film. The entire batch is wrapped in rainproof stretch film and secured with hard paper edge protectors; long profiles are also reinforced with wooden frames to minimize the risk of scratches during transit.
A: No, it varies. Zinc-aluminum-magnesium and hot-dip galvanized steel rails come with a 25-year anti-corrosion warranty, while anodized aluminum alloy rails have a 20-year anti-corrosion warranty; please confirm the specific warranty terms before placing an order.
A: Guide rails can be customized with specific cross-sections, subject to minimum order quantities (MOQ) for extrusion mold creation; however, simple modifications like length adjustments or punching do not require new molds and have lower MOQ requirements.
A: Standard slotted profiles paired with compatible clamps will not slip; you need to provide the component thickness so we can match the correct clamp. Mixing accessories from different brands is not recommended.
A: Store them in a dry, well-ventilated area and avoid exposure to rain or standing water. Profiles should be elevated off the ground—do not stack them directly on dirt or mud—and the protective film should not be removed prematurely.
