Product Description
RF07 Flange-Top Solar Clamp | Adjustable & Direct-Attach Ready Mount
The RF07 Flange-Top Clamp is a high-versatility solution that combines a heavy-duty standing seam clamp base with a specialized wide Flange Plate. This slotted or multi-hole flange provides extended adjustability and a significantly broader mounting surface compared to standard single-bolt clamps.
It is particularly engineered for complex grid alignment on irregular roofs, supporting direct-attach (rail-less) panel configurations, or enabling low-profile side-mounting of rails. The flange allows installers to compensate for drifting roof seams, ensuring the solar array remains perfectly straight.
Constructed from high-tensile Anodized Aluminum 6005-T5, the RF07 utilizes a non-penetrating mechanical lock that preserves the roof’s waterproof integrity and protective coatings, making it the favorite choice for custom residential and commercial solar projects.
Product Structure

Selling Points & Advantages
- Installation Flexibility: The slotted flange allows for precise East-West or North-South adjustment to compensate for irregular seam spacing.
- Direct-Attach Ready: Provides an expanded surface area to support solar panel frames directly without the need for mounting rails.
- Low Profile Integration: Enables side-mounting of rails to reduce wind uplift forces and improve the overall system aesthetics.
- Non-Penetrating Security: Stainless steel setscrews grip the seam without piercing, ensuring zero leaks and maintaining roof warranties.
- Structural Strength: Engineered to transfer heavy loads directly to the purlins while preventing seam deformation.
Technical Parameters
| Feature | Specification |
|---|---|
| Brand Name | Ziyuan |
| Model Code | RF07 |
| Top Feature | Wide Slotted Flange Plate |
| Material | Anodized Aluminum 6005-T5 |
| Hardware | SUS 304 Stainless Steel |
| Seam Compatibility | Round Bulb standing seams |
| Wind Load | Up to 60 m/s |
| Adjustment Range | 30mm – 50mm via Slotted Flange |
| Warranty | 12-year warranty |
| Service Life | 25-year service life |
Related Models
FAQ
Q01: Why use a flange clamp like the RF07?
A01: The flange allows for positional adjustment. If roof seams aren’t perfectly straight, the slot lets you align the rail perfectly.
Q02: Can I use this for rail-less mounting?
A02: Yes, the wide flange provides enough surface area to support solar panel frames directly, making it ideal for rail-less systems.
Q03: Is the flange plate adjustable?
A03: Yes, the slotted hole design allows for significant East-West or North-South adjustment during site installation.
Q04: What type of seams does it fit?
A04: It is specifically designed for round bulb standing seams. The clamp jaw is contoured to fit the round seam profile securely.
Q05: Does it require drilling into the roof?
A05: No, it uses non-penetrating setscrews to grip the seam fold, ensuring your roof warranty remains valid.
Q06: Can I side-mount rails with this clamp?
A06: Yes, the flange allows L-feet to be mounted on the side, enabling a lower profile and more aerodynamic solar array.
Q07: What is the material grade?
A07: High-tensile Anodized Aluminum 6005-T5 with SUS 304 stainless steel hardware.
Q08: Is the hardware included in the package?
A08: It comes with necessary setscrews for seam attachment. Rail mounting bolts are usually part of the racking kit.
Q09: How much adjustment does the slot offer?
A09: The slot typically allows for up to 50mm of adjustment range, depending on the specific project configuration.
Q10: Is it suitable for high hurricane wind zones?
A10: Yes, the large surface area and dual-screw base provide excellent uplift resistance for wind zones up to 60m/s.
Q11: Can it support microinverters?
A11: Yes, the flange provides a convenient and secure mounting point for microinverters or power optimizers.
Q12: Does it work on snap-lock seams?
A12: It depends on the seam height; while the base might fit, we recommend consulting our technical team for specific snap-lock profiles.
Q13: What is the recommended torque specification?
A13: Standard torque is 15-17 Nm for the SUS 304 setscrews to ensure maximum grip without deformation.
Q14: Does it come pre-assembled?
A14: Yes, the clamp body and flange plate are pre-assembled to reduce labor time on the roof.
Q15: What is the warranty period?
A15: Ziyuan Solar provides a 12-year structural warranty and a 25-year designed service life.












