Purlin Connector

Purlin Connector — Product Introduction

A purlin connector is a specialized structural accessory used for connecting and fixing purlins in photovoltaic (PV) mounting systems and steel structure roof systems. This product is usually stamped and formed from high-quality carbon structural steel and undergoes anti-corrosion treatments such as hot-dip galvanizing or zinc-aluminum-magnesium coating. It features firm connections, convenient assembly, and durable anti-corrosion properties, effectively transmitting loads and ensuring the overall stability of the mounting system.

I. Product Features

1. Standardized specifications: Produced according to national manufacturing and inspection standards for steel structures and PV mounting systems, with dimensional tolerances, hole diameters, and bending angles that meet engineering design requirements.

2. Reasonable structure: Common designs include U-shaped, L-shaped, hoop-type, and straight connectors, some with anti-slip teeth or stiffening ribs. The contoured fit design tightly wraps around C-channel or Z-channel purlins, ensuring uniform stress at the nodes.

3. Excellent material: Usually made of high-quality carbon structural steel such as Q235B or Q355B, formed by cold stamping and cold bending, balancing high load-bearing capacity with good processing toughness.

4. Surface protection: The surface generally adopts hot-dip galvanizing or zinc-aluminum-magnesium treatment (e.g., zinc layer thickness ≥65μm), providing excellent anti-corrosion performance suitable for harsh outdoor environments. Some aluminum accessories are treated with anodizing.

5. Complete specifications: Covers a variety of common specifications, suitable for purlins of different cross-sectional dimensions (such as C-channel and Z-channel 41×41, 41×52, etc.) and thicknesses (such as 2.0mm, 2.5mm, 3.0mm, etc.).

II. Product Advantages

1. Compliant and reliable: Conforms to structural mechanics codes, with precise dimensions and stable quality. It can withstand load calculations, providing a guarantee for the safety of the mounting system.

2. High matching precision: Precise punching and positioning allow for a tight fit with bolts and nuts, reducing the need for hole enlargement or forced assembly during on-site installation and enhancing the tightness of node connections.

3. High strength and long lifespan: High-strength steel combined with stiffening rib designs provides strong resistance to shear and pull-out forces, making it resistant to deformation or tearing and matching the service life of PV systems of over 25 years.

4. Efficient installation: Modular accessory design supports pure bolted assembly, eliminating on-site cutting and welding processes, greatly reducing the difficulty of high-altitude operations and saving construction time.

5. Low overall cost: Good anti-corrosion performance means almost no maintenance is required later. Standardized production reduces material waste and labor costs, offering high cost-effectiveness.

III. Scope of Application

1. Photovoltaic mounting systems: Widely used for the longitudinal splicing of C-channel/Z-channel purlins in ground-mounted power stations and rooftop distributed projects, as well as for fixed connections between purlins and rafters or columns.

2. Metal roof and wall systems: Used for overlapping primary and secondary roof purlins and connecting wall girts in building steel structures, ensuring the stability of the building envelope.

3. Secondary structures of steel buildings: Used in large steel structures such as factories and warehouses to support and fix secondary load-bearing components of walls and roofs.

4. Agricultural greenhouses: Used for fastening and supporting connection nodes such as arch pipes and longitudinal tie rods in greenhouse skeletons.

5. Mechanical and electrical seismic bracing systems: Used for splicing and node reinforcement of C-channel steel in comprehensive pipeline supports, meeting mechanical and electrical seismic requirements.