Purlins are cold-formed steel members used as secondary structural elements in steel buildings. They transfer roof loads to the main structural frame and provide support for roofing systems. Emaar Industries supplies C Purlins and Z Purlins for PEB buildings, warehouses, factories and other steel structures.
C Purlin vs Z Purlin
Feature:
C Purlin:
Z Purlin:
Section shape
C
Z
Main use
Secondary steel framing
Secondary steel framing
Common application
Roof & wall framing
Roof framing
Splicing
Simple
Useful for lapped connections
Selection
Based on structural design
Based on structural design
The choice between C and Z purlins should be based on the span, loading, support conditions and structural design. For longer continuous roof runs, Z purlins can be useful because their shape allows lapping at supports.
Why Purlin Specification Matters?
Purlin performance is not determined by the section name alone. Steel thickness, section dimensions, span, spacing, load and connection details all affect the final structural performance. For this reason, purlins should be selected from the project's structural calculations rather than by size alone.
What is the difference between C purlin and Z purlin?
The main difference is the section shape and how the members are arranged and connected. Z purlins are particularly useful for lapped continuous roof systems.
