Steel Structural Sections
TH C-Purlin (Galvanised Steel)
TH C-Purlin (Galvanised Steel)

 

TH C-Purlin (Galvanised Steel)

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Category: Steel Structural Sections Available
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Description

TH C-Purlin (Galvanised Steel)

TH C-Purlin is a cold-formed galvanised steel C-section engineered for light steel roof and wall framing. Its profile provides reliable bending strength and stable support for cladding while keeping the system efficient and lightweight.

  • Enhanced structural performance through innovative cold-forming.
  • High-tensile steel composition for dependable strength.
  • Advanced cold roll forming for consistent accuracy.
  • Pre-punched holes for faster installation.
 

Enhanced structural performance with innovative cold forming technology

TH C-Purlin is produced using advanced cold roll forming to achieve a precise, stiffened C-profile. This method improves load performance and bending resistance, giving strong structural behaviour without unnecessary weight.

Maximum load-bearing capacity

Built to perform under typical roof and wall loads, TH C-Purlin delivers stable spanning and dependable load transfer for light steel construction.

  • Ideal for heavy rainfall:  The rib design ensures excellent water-discharge capacity, making it ideal for areas with heavy rainfall.
  • Suits any building:  TH C-Purlins are adaptable for commercial, industrial, and residential projects, providing flexibility in design and application.

Parts of TH C-Purlin

The C-section geometry is designed for efficient load transfer and stable fixing. Key parts are referenced in the sectional profile.

  • Web (Depth, D): Main vertical face that carries bending loads.
  • Flange (Width, L): Side plates that increase stiffness and provide fixing surfaces.
  • Lip / Return: Edge fold that improves torsional resistance and stability.
  • Base width (B): Internal width for connection detailing and alignment.
  • Thickness (t): Selected to match span and design loads.

Specifications

TH C-Purlin Sectional Profile

Sectional Profile

Dimension Details

Material Specification

  • Material thickness: 1.6mm, 2.0mm, 2.5mm, 3.0mm
  • Steel grade: ASTM-A446 Grade D
  • Yield stress: 440MPa – 530MPa
  • Coating mass: Z/12-Z/27 (120-275)

Dimension

  • Depth, D: ±1mm
  • Flange Width, F: ±3mm
  • Length: ±3mm
  • Hole centres: ±1.5mm
  • Lip, L: ±3mm
  • Thickness, t: ±8%

TH C-Purlin FAQ

It supports roof or wall cladding and transfers loading to the main structural frame as a secondary member.

Yes. The galvanised coating offers strong corrosion protection when specified correctly for the exposure environment.

Selection depends on span, spacing, load and wind pressures. Refer to span tables and confirm with the project engineer or supplier.

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