Aluminum alloy edge-clamping blocks are installed on the outer edges of the first and last solar modules in a photovoltaic (PV) array. They secure the modules to the mounting rails, restricting end-point displacement and providing resistance against external forces such as high winds and snow loads. Together with mid-clamps, they form a complete module-clamping system. Each unit comes with 304 stainless steel T-bolts and nuts, with an optional EPDM anti-slip rubber pad to protect the module’s aluminum frame from indentations or slippage. The structural design facilitates drainage and runoff, helping to minimize the accumulation of dust and snow. These clamps are suitable for both single-glass and dual-glass modules, applicable to residential, commercial, industrial, and utility-scale ground-mounted PV power plants; they can also be customized based on specific module thicknesses.
Constructed from 6005-T5 or 6063-T5 aluminum alloy, these aluminum alloy edge-clamping blocks offer a superior strength-to-weight ratio. They are highly rigid and resistant to deformation under long-term loads, reducing the overall weight of the PV array—thereby lowering the load on rooftops and support structures—while simplifying handling and installation.
Featuring an anodized finish with an oxide layer thickness of ≥10μm, these clamps remain stable even in coastal, salt-spray, or humid environments. Backed by a comprehensive, in-house anti-corrosion process, they come with a 25-year anti-corrosion warranty, reducing long-term operational and maintenance costs associated with component replacement or rust remediation.
The inner surface features anti-slip serrations, which, when combined with an EPDM rubber pad, increase friction to prevent module slippage. This design also protects the module frame, preventing indentations or damage to the aluminum frame and glass, ensuring the long-term, safe operation of the modules.
The modular design eliminates the need for complex on-site processing. Installation can be performed by a single person, which reduces the challenges of working at heights, significantly shortens construction timelines, and helps owners save on labor and project duration costs. 5. Wide Adaptability:
Compatible with mainstream solar module thicknesses of 30/35/40mm, with support for non-standard, customized dimensions. Designed to accommodate various frame structures and modules from different manufacturers, a single supply system can meet the profile requirements for a wide range of projects.
The aluminum alloy edge-clamping blocks are engineered to meet structural load requirements in regions prone to high winds and heavy snowfall. When used in conjunction with mid-clamps, they ensure the overall stability of the solar array. As the clamps and mounting rails are supplied by the same manufacturer, they offer a high degree of precision, minimizing issues such as poor fit or slippage during on-site assembly.
Only primary aluminum billets are used; recycled or scrap aluminum is strictly prohibited. Incoming raw materials undergo random quality inspections to eliminate substandard base materials at the source, ensuring consistent mechanical properties and long-term corrosion resistance.
Rigorous inspections are conducted throughout the extrusion, machining, and surface treatment stages. Dimensional tolerances are strictly controlled, and "first-article" inspections are performed for critical dimensions before mass production begins, ensuring consistent fit and locking performance across every batch of clamps.
Products undergo random testing for appearance, oxide film thickness, hardness, and pull-out load capacity. Test reports can be provided to ensure that all performance indicators meet project acceptance criteria.
The aluminum alloy edge-clamping blocks are ISO9001 and CE certified. Material certificates and warranty documentation are provided with each shipment, meeting the requirements for domestic tenders as well as inspection and customs clearance for overseas projects.
Components are individually packaged and placed in reinforced outer cartons to prevent damage or deformation during sea or land transport, reducing the risk of goods arriving in an unusable condition.
After-Sales Service
We provide complimentary assistance with product selection, installation planning, and load-bearing technical consultations, including the review of project blueprints. Prior to purchase, we can help determine the appropriate specifications based on the project’s wind/snow load requirements and module thickness; during the installation phase, we offer comprehensive installation guidance.
Under normal outdoor usage conditions, aluminum alloy edge-clamping blocks come with a 25-year anti-corrosion warranty, and stainless steel fasteners come with a 10-year warranty covering material and workmanship defects.
For quality issues arising from manufacturing defects, we offer replacements, exchanges, or negotiated compensation. We provide a rapid response upon verification via photos to ensure project schedules are not delayed by component issues.
Production is scheduled according to project timelines, with support for phased deliveries. For export orders, we provide packing and customs clearance documentation and support various trade terms, ensuring timely shipment for both domestic and international orders.
We provide rapid coordination for technical issues and offer remote guidance for on-site installation and commissioning. Questions regarding dimensions or fit during installation are answered promptly online. Post-delivery, we conduct regular follow-ups to monitor on-site product performance and gather feedback for optimizing product selection in future projects.
A: They are not interchangeable. Mid-clamps are installed between modules to secure two adjacent panels simultaneously, whereas aluminum alloy edge-clamping blocks are installed at the ends of the array to secure the outer edge of a module; both are required to fully secure the array.
A: The clamps feature internal slots designed for specific module thicknesses; simply match the clamp to the actual module thickness. They are equipped with EPDM rubber pads to cushion and protect the module frame. Proper tightening will not damage the glass or aluminum frame, though excessive force exceeding torque specifications is not recommended.
A: Yes, aluminum alloy end clamps can be purchased individually. Mid-clamps and fasteners can also be ordered separately, and we accept orders of all sizes, from small to large batches.
A: Yes, they are compatible with both single-glass and double-glass modules. Simply provide the frame structure and thickness of your modules when placing an order, and we will supply the appropriate slots and rubber gasket configurations.
A: Our aluminum alloy edge clamps feature an anodized coating with a thickness of ≥10μm, ensuring stable salt-mist resistance—ideal for humid coastal environments. They also come with a 25-year anti-corrosion warranty. For extremely corrosive industrial zones, we can evaluate options for a thicker anodized coating.
A: For standard specifications, items are generally in stock and ship within 7–10 business days. For non-standard, customized sizes or specific thicknesses, the lead time is approximately 15–25 business days; we will confirm the exact timeline before you place your order.
Address
No. 2, Expressway Auxiliary Road, South Area of High-tech Industrial Park, Zitai Economic and Technological Development Zone, Tianjin, China
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