Solar Square Tube Clamp Hook: The Ultimate No-Drill Solution for Solar Purlin Mounting

Solar Square Tube Clamp Hook

Product Type: Solar Mounting Component
Product Alternative name: Solar Purlin Claw Hook / No-Drill Solar Mounting Hook
Material:Hot-Dip Galvanized Carbon Steel
Max Wind Load : 60 m/s
Max Snow Load : 1.4 KN / M ²
Solar Module Orientation: Landscape / Horizontal
Application: Unframed / Bifacial / Frameless modules

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Solar mounting bracket for square steel purlin

Overview
Specification
FAQ
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Introduction

In commercial and industrial solar installations, speed, structural integrity, and long-term reliability are non-negotiable. The Solar Square Tube Clamp Hook (also known as the Purlin Claw Hook) is engineered to solve one of the most common pain points in solar mounting: securely attaching rails and panels to square steel purlins without drilling, welding, or damaging the structural integrity of the roof framework.

Key Features & Benefits

✅ No-Drill Installation

Eliminates the need for on-site drilling, tapping, or welding. The hook’s claw-style design clamps directly onto standard square tube purlins (40×60mm, 50×100mm, etc.), cutting installation time by up to 50% and reducing labor costs significantly.

✅ Robust, Weather-Resistant Construction

Crafted from high-grade hot-dip galvanized steel, this clamp hook delivers exceptional corrosion resistance and structural strength. It is built to withstand harsh outdoor conditions, including high wind loads (up to 120mph / 193km/h) and heavy snow loads, ensuring stable performance for 25+ years of service life.

✅ Universal Fit & Adjustable Design

The integrated adjustment screw allows for precise positioning and a tight, rattle-free grip on purlins of varying sizes. Its versatile design works seamlessly with most standard solar mounting rails, making it suitable for ground-mounted, carport, and rooftop PV systems.

✅ Structural Safety First

By avoiding drilling into the purlin, the clamp hook preserves the structural integrity of the steel framework, eliminating potential weak points that could lead to corrosion or failure over time. The claw-style locking mechanism prevents slippage, even under extreme wind uplift conditions.

Brief Descriptions:
Solar Mounting Components –Solar Square Tube Clamp Hook
Item type:	Solar Panel Mounting Components
Type:
Installation Site:	Standard solar rails
Profile Material:	Hot-Dip Galvanized Carbon Steel
Fasten Parts	Lag Screw / Expansion Bolts
PV Modules:	Frameless or Frame panel
Module Orientation:	Landscape and Portrait
Standards:	AS/NZS 1170
	DIN 1055
	GB50009-2012
	IBC2009
	TUV
	JIS C 8955: 2011
	International Building Code IBC 2009
	California Building Code CBC 2010
Warranty	10 years
Designed Lifespan	25 years
Packing Details:
Inner:	Bubble bag + inner box + Carton
Outer:	Wooden Box, Steel Pallet, MDF, etc

Solar Square Tube Clamp Hook

Q: Is this hook suitable for long-term outdoor use?
A: Yes. It is made of hot-dip galvanized steel, offering superior corrosion resistance against rain, snow, and UV exposure. It has a service life matching the 25+ year warranty of most solar panels, with no need for periodic maintenance.

Q: How do I install the hook on-site?
A: Simply place the two claws over the square purlin, slide the hook to the desired position, then tighten the central screw. The hook locks firmly onto the tube, ready to attach solar rails or panels immediately.

Solar panel mounting hook for square tube

Overview