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Purlin

Why Choose Us

Wuxi GRT Technology Co., LTD is an import and export company specializing in gold product technology development and services.

Products Sell Well

We have already cooperated with companies from the United States, Russia, Italy, Germany and other countries.

Quality Assurance

The company passed SGS audit and obtained ISO 9001 quality management system certification, with an annual production capacity of 6GW.

Quality Services

Our team is committed to delivering high-quality services to our clients. We use the latest technologies and tools to ensure that our services exceed your expectations.

Wide Product Range

Products cover various types of pv support structural type "C", "Z" type, "Ω" type, "U" shaped openings profiles, square,polygon, prototype silent profile and stent stampings, assembly parts and so on.

Importance of Purlin

Protection
Frames safeguard the solar panel's internal parts from both thermal and mechanical stress, which is especially crucial during transport, setup, and harsh weather conditions.

Mounting Points
The frames offer attachment points for mounting, simplifying the process of affixing solar panels to various mounting systems, such as rooftop and ground-based installations.

Aesthetics
Solar panel frames can also improve the overall look of the solar installation by coordinating colors for racks, clips, and frames, resulting in a more unified and visually pleasing appearance.

Damage Prevention
A well-crafted aluminum solar panel frame can aid in avoiding issues such as short circuits, insulation degradation, and other problems that can adversely affect the performance and lifespan of the solar panel.

Structural Stability
Aluminum frames provide robust support to solar panels, protecting them from damage caused by various physical impacts including bird collisions and weather elements.

Withstanding Adverse Conditions
Aluminum frames enhance the rigidity of solar panels, enabling them to endure harsh weather conditions such as heavy snow loads and storms.

Dust Resistance
Aluminum frames help shield solar panels from moisture and debris, ensuring proper drainage and preventing damage to electrical components.

Thermal Management
Aluminum frames act as heat sink, drawing excess heat away from solar cells and maintaining optimal operating temperatures, thereby ensuring consistent performance and extended lifespan.

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Feature of Purlins

Variety of Shapes and Sizes
C-purlins can be produced in a variety of sizes and shapes, from small and light to large and strong. This creates flexibility in design and application.

High-Quality Materials
Usually manufactured from high-quality metals such as high-strength steel, C-purlins have good load-bearing capacity and durability, making them suitable for projects that require stability and safety.

Diverse Applications
C-purlins are used in many fields, including bridge and house construction, factory structures, renewable energy projects, and many other applications. This proves its versatility and flexibility.

Corrosion Resistance
If properly fabricated and treated, C-purlins are resistant to corrosion, increasing their ability to maintain shape and durability in harsh environments.

Advanced Processing Process
Advances in metal processing technology have optimized the C-purlin manufacturing process, from cutting and bending to welding and surface processing, ensuring quality and precision.

Types of Purlins

C Shaped Purlins
C purlins, as the name implies, are formed as in the C alphabet, which is primarily used to support walls and floors. These may also use our C segment purlins with door mounting, roof clipping, window trimming, parapet rails, and side rails.

C Purlins
C section purlins are available in a wide range of thicknesses and are manufactured to the exact specifications of the customer up to any length, enabling them to be easily modified for use in buildings of various sizes.

Z Shaped Purlin

Another form of Z purlin is stronger than C purlin and is mostly used together at joints and overlaps. Z purlins or zed purlins are horizontal beams that are built to shape a building shell structure's roof and wall joists.

Sizes Available for Z Purlins

We can also manufacture them un-drilled or with any diameter pre-drilled holes according to your requirements. Web height up to 300 mm is available and thickness up to 3.2 mm is available.

C Shaped SIGMA Purlins

These types of purlins are having good structural properties and supersedes above two varieties of purlins. These may also use our C segment purlins with door mounting, roof clipping, window trimming, parapet rails, and side rails.

Applications of Purlins

Pre-Engineered Buildings

As the primary support structure for the roof and walls, they provide a stable platform for the building's exterior and interior finishes.

Mezzanine Floors

These are intermediate floors that are located within a building. They provide a stable and secure platform for the mezzanine floor and the loads that it will carry.

Industrial Buildings

For instance, warehouses and factories, where a strong and durable support structure is required. They can support heavy loads, such as equipment and machinery, and withstand exposure to the elements, such as rain, snow, and strong winds.

Agricultural Buildings

Places such as barns, stables, and sheds, where they provide a strong and stable platform for the roofing material. They also provide a large open space underneath the roof, which is useful for storing equipment and feed.

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Production Equipment

Our Factory

FAQ

Q: How are purlins maintained?

A: Purlins require minimal maintenance, which includes periodic inspections for corrosion, structural integrity, and tightening of connections to prevent issues over time.

Q: What materials are commonly used for purlins?

A: Purlins are typically made from steel (such as galvanized or cold-formed steel), aluminum, or timber, depending on the structural requirements and environmental conditions.

Q: What standards govern the design and manufacturing of purlins?

A: Purlins are designed and manufactured according to national and international standards, such as ASTM, EN, or ISO codes, which ensure safety, reliability, and performance for structural applications.

Q: What are the main applications of purlins?

A: Purlins are primarily used in roofing and wall structures for industrial, commercial, and residential buildings. They provide support to roof decks, metal panels, or other sheathing materials.

Q: What determines the spacing of purlins?

A: The spacing of purlins depends on factors such as the type of roof covering, load requirements, purlin material, span length, and local building codes.

Q: What is the difference between a purlin and a rafter?

A: Purlins are horizontal members supporting roofing sheets, while rafters are inclined structural beams that form the main framework of the roof and transfer loads to the walls or foundation.

Q: What are cold-formed steel purlins?

A: Cold-formed steel purlins are lightweight structural elements manufactured by bending thin steel sheets at room temperature, providing high strength-to-weight ratios for efficient roofing and wall systems.

Q: Can purlins be used for both roofs and walls?

A: Yes, purlins are versatile and can be installed horizontally in roof structures or vertically in wall systems as girts to support cladding materials.

Q: What is the load-bearing capacity of purlins?

A: The load-bearing capacity of purlins depends on their material, size, thickness, span, and the type of loads (e.g., live load, dead load, wind load) acting on them.

Q: What coatings are used to protect purlins from corrosion?

A: Purlins are often coated with protective layers such as galvanization (zinc coating), epoxy paint, or powder coatings to enhance durability and resistance to rust and corrosion.

Q: How are purlins connected to the main structure?

A: Purlins are typically connected to primary framing members such as rafters or beams using bolts, brackets, or welds, depending on the design and load requirements.

Q: What is the standard thickness of purlins?

A: The thickness of purlins varies depending on their application, typically ranging from 1.5mm to 3mm for light and medium-duty structures.

Q: What are the advantages of using steel purlins over timber?

A: Steel purlins offer advantages such as higher strength, lighter weight, resistance to pests and fire, and reduced maintenance compared to timber purlins.

Q: How are purlins installed on sloped roofs?

A: On sloped roofs, purlins are installed perpendicular to the roof slope and spaced evenly to support roofing sheets, with proper anchoring to ensure stability under load.

Q: Are purlins suitable for long-span structures?

A: Yes, Z-purlins in particular are well-suited for long-span structures due to their ability to overlap and create continuous spans, reducing the number of supports required.

Q: What is a sag rod, and why is it used with purlins?

A: A sag rod is a tension rod installed between purlins to prevent sagging or deflection, ensuring alignment and structural stability under load.

Q: Can purlins support solar panels?

A: Yes, purlins can support solar panel mounting systems when appropriately designed and installed to handle the additional loads of the panels and associated equipment.

Q: What is the difference between C-purlins and Z-purlins?

A: The key difference is the shape: C-purlins have a uniform "C" profile, while Z-purlins are shaped like a "Z," allowing them to overlap for enhanced strength in continuous spans.

We're well-known as one of the leading purlin manufacturers and suppliers in China. Please feel free to buy high quality purlin made in China here from our factory. For price consultation, contact us.

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