C & Z Purlins (Cold-Formed)
High-Tensile Galvanized Structural Steel Secondary Framing
Engineered for Performance & Long-Term Reliability
Yatee C and Z Purlins are engineered secondary structural framing components used to support roof sheeting and wall cladding. Cold roll-formed from high-tensile galvanized steel (up to 450 MPa yield strength), our purlins provide an exceptional strength-to-weight ratio and superior corrosion resistance.
Key Technical Features
Continuous Lap Z-Purlin Capability
Z-purlins overlap at interior supports to create continuous beam action with 30% higher load capacity.
Automated Online Punching
Pre-punched standard hole patterns (round and slotted) matching Tekla detailing exactly.
High Corrosion Protection
Manufactured from hot-dip galvanized steel coil with zinc coating up to 275 GSM.
Custom Cut Lengths
Roll-formed to exact specified lengths up to 14 meters, eliminating site wastage.
Standard Specifications & Material Properties
C & Z Purlins (Cold-Formed) Parameters
Compliant with IS 800, AISC 360, MBMA and ASTM standards
| Parameter / Feature | Standard Specification | Design Code / Standard |
|---|---|---|
| Raw Material Grade | High-Tensile Galvanized Steel (Yield Strength: 345 MPa to 450 MPa) | IS 277 / ASTM A653 |
| Zinc Coating Mass | Z120 to Z275 gsm (Hot-Dip Galvanized) | IS 277 |
| Depth Range (Web) | 100mm to 350mm | Custom |
| Flange Width | 40mm to 100mm | Standard / Custom |
| Thickness Range | 1.50mm to 3.50mm | Precision Gauge |
| Lip Size | 15mm to 30mm | Standard |
Available Dimensions & Standard Ranges
Manufacturing Process & QA Gates
Decoiling & Leveling
Continuous feeding and precision multi-roll leveling of high-strength steel coils.
Hydraulic CNC Punching
Online high-speed hydraulic punching of slotted bolt holes per Tekla NC files.
Progressive Multi-Stage Roll Forming
18-station cold roll-forming mill shaping exact web, flange, and return lip profiles.
Flying Hydraulic Shearing
Burr-free flying cut-off to specified length without stopping line motion.
Typical Industrial Applications
Frequently Asked Questions
Z-purlins can be nested and lapped over frame supports to form continuous beams, reducing bending deflection and optimizing steel thickness.
Get a Quotation for C & Z Purlins (Cold-Formed)
Provide your length, width, clear height, and location parameters for an instant preliminary estimate and structural schedule.
Start Project EstimatorTechnical Documentation
Download technical brochures, section modulus tables, and CAD profiles.
Download Data Sheet (PDF)