Z & C Purlins
Overview
Z & C Purlins are essential structural components used in Pre-Engineered Buildings (PEB), industrial sheds, and roofing systems to provide strong and stable support for roof and wall panels. They form the secondary framing system that transfers roof and wall loads to the main structural framework.
At BSSM Infra, we manufacture and supply high-quality Z and C Purlins made from high tensile galvanized or cold-formed steel, ensuring superior strength, accuracy, and durability. Our purlins are designed for lightweight construction, easy installation, and long-term structural performance, making them ideal for a wide range of industrial and commercial projects.
What Are Z & C Purlins?
Purlins are horizontal beams or members placed along the length of a roof or wall, attached to the main frame to support roofing sheets and wall claddings.
Z Purlins: Have a “Z” shaped profile, suitable for overlapping and continuous spans.
C Purlins: Have a “C” shaped profile, ideal for single-span applications such as wall girts and roof supports.
Both types are designed for high load-bearing capacity, easy handling, and fast installation, ensuring efficient and reliable performance in steel structures.
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Key Features
- High Strength-to-Weight Ratio – Provides excellent structural support without adding excess weight.
- Durable & Corrosion Resistant – Manufactured from galvanized or cold-rolled steel.
- Customizable Profiles – Available in various thicknesses, depths, and lengths.
- Easy Installation – Simple to handle, cut, and bolt on site.
- Versatile Design – Compatible with all types of roofing and cladding systems.
- Economical Solution – Reduces overall steel consumption and project costs.
- Accurate Dimensions – Roll-formed with precision for perfect alignment.
- Maintenance-Free – Long service life with minimal upkeep required.
Technical Specification
| Parameter | Specification |
|---|---|
| Material | Galvanized Steel / Cold-Formed Steel |
| Grade | 240 MPa / 350 MPa / 550 MPa |
| Thickness (mm) | 1.2 / 1.5 / 1.6 / 1.8 / 2.0 / 2.5 / 3.0 |
| Depth (mm) | 100 – 300 (customizable) |
| Flange Width (mm) | 40 – 100 |
| Lip (mm) | 15 – 25 |
| Length | Up to 12 meters (customized as per design) |
| Finish | Hot Dip Galvanized / Bare / Painted |
| Coating | 120 GSM – 275 GSM Zinc Coating |
| Shape Options | Z Purlin / C Purlin / Sigma Section |
| Manufacturing Process | Cold Roll Formed – Precision Engineered |
Advantages
- Structural Efficiency: Provides strong, stable support to roofing and cladding panels.
- Lightweight Construction: Reduces overall structural weight and cost.
- Customizable Design: Available in different thicknesses and profiles as per design load.
- Easy to Handle: Quick and simple installation saves time on-site.
- Cost-Effective: Minimizes steel usage while maximizing strength and efficiency.
- Weather Resistant: Zinc coating ensures corrosion resistance and long-term performance.
- Ideal for PEB Systems: Perfectly integrates with rafters, columns, and other steel members.
- Pre-Engineered Buildings (PEB)
- Industrial Sheds & Warehouses
- Factory Buildings & Workshops
- Aircraft Hangars & Godowns
- Commercial Complexes & Showrooms
- Cold Storage & Logistics Facilities
- Solar Panel Mounting Structures
- Mezzanine Floors & Decking Support Systems
At BSSM Infra, all Z & C Purlins are manufactured under strict quality control standards using advanced roll-forming technology. Each section is tested for:
- Dimensional accuracy and straightness
- Tensile and yield strength
- Coating thickness and uniformity
- Structural load performance
- Corrosion and weather resistance
Why Choose Us
- High-Grade Steel: Ensures superior strength, rigidity, and durability.
- Precision Engineering: Consistent quality and perfect alignment with structural members.
- Customized Solutions: Available in various thicknesses, profiles, and lengths.
- Fast Installation: Pre-punched holes and lightweight sections reduce construction time.
- Corrosion Protection: Hot-dip galvanized coating for long-lasting performance
- Proven Track Record: Widely used across numerous industrial, commercial, and PEB projects in India.
Z and C Purlins are structural steel members used in pre-engineered buildings, roofing, and wall cladding systems to provide strong support for the roof and wall sheets. Their “Z” and “C” shapes allow for high strength and easy installation.
C Purlins are generally used for simple spans or single spans, while Z Purlins are preferred for continuous spans where overlapping is required. Z Purlins offer better structural continuity and load distribution.
They are usually made from high-tensile galvanized steel or cold-formed steel, which provides excellent strength, corrosion resistance, and long-lasting performance.
They are widely used in pre-engineered buildings, industrial sheds, warehouses, cold storages, commercial structures, and residential roofing systems.
Z & C Purlins are available in various sizes, typically ranging from 100 mm to 300 mm depth, with thicknesses from 1.2 mm to 3.0 mm (customizable based on project requirements).
Yes, they can be cut to custom lengths and sizes according to the structural design and project specifications, minimizing wastage and installation time.
They are lightweight, high in strength, easy to handle and install, cost-effective, and require minimal maintenance. They also allow larger spans between supports.
Thanks to their galvanized or coated finish, Z & C Purlins are highly resistant to rust and corrosion, requiring very little maintenance over their lifespan.
They are fastened to the main structural frame using bolts or self-drilling screws. Z Purlins can also be overlapped to form continuous spans, improving load-carrying capacity.
Yes. They are made from recyclable steel and contribute to sustainable construction practices.
