Galvanised Steel Z Purlins Sections

Cardinal Steels offer a selection of purlins available in the form of both Z purlins and C sections. Z purlins are horizontal beams that are designed to form the roof and wall joists of a building shell structure. They sit between the roofing sheets and the building, acting as a support for the sheet. All to ensure it is firmly attached and safely in place.

Our Z purlins for sale are manufactured in-house at our facility in Bromsgrove. This ensures our they are of the highest quality, optimum price, and with a fast turnaround. Z purlins are most commonly used in agricultural and industrial buildings. This is due to their extremely versatile and lightweight properties, making them adaptable across a variety of different-sized buildings.

There are various thicknesses and depths. The thickness and depth are judged by the span the purlin/section is covering combined with the weight capacity. We can also manufacture and supply quality galvanised Z purlins for use alongside any of our steel roofing sheets.  


The depths of purlins and sections we have to offer are: 

  • CS 121 
  • CS 140 
  • CS 177 
  • CS 200 
  • CS 235 
  • CS 265 

The purlins and sections are available in the following thicknesses: 

  • 1.4mm 
  • 1.6mm 
  • 1.8mm 
  • 2.0mm 
  • 2.5mm 
Our galvanised Z purlins are both swift to install and are suitable for use alongside both insulated and uninsulated roofs and wall spaces alike. 

Z Purlins and Sections in Stock

When contacting one of our members of staff, please use the figures and codes to specify your requirements. For instance, if you require a 177mm depth with a 1.6mm thickness use the code CS17716. 

We offer eaves beams as standard 190mm Deep with a 2.0mm thickness. These are available cut to length like all other items. Please use reference CS19020 when asking for quotations or purchasing. 

We keep various Z purlin sizes, lengths, and depths of Z purlin and C sections in stock. As standard up to 6.100m lengths and in 177mm and 200mm, ideal for use with our corrugated panels or box profile sheets. 

For more info on Z purlins, C sections, eaves beams, and all other accessories available from our range. See our downloadable brochure with all relevant span and load tables. 

Z Purlin Brochure

  • image/svg+xmlimage/svg+xml
    What Are Z Purlins?

    Z Purlins are structural members that are used as a framing element in metal structures, typically in the form of a ‘Z’ shape. They are designed to join the roof and wall joists of the building structure.

  • image/svg+xmlimage/svg+xml
    How Far Can Z Purlins Span?

    Z Purlins can span a variety of lengths depending on the load they are carrying. As standard Cardinal Steels offers up to 6.100 m lengths and in 177 mm and 200 mm, ideal for use with our corrugated panels or box profile sheets.

  • image/svg+xmlimage/svg+xml
    What Is The Difference Between C Purlin And Z Purlin?

    C purlins take their name from their shape, and are generally used to support roofing, cladding or insulation material. Z purlins are ‘Z’ shaped and are typically used for structural bracing to support both roof and wall elements. Z purlins have an angle less than 90 degrees making them flexible to be used across a variety of purposes.

  • image/svg+xmlimage/svg+xml
    Why Are Z Purlins Used?

    Z Purlins are used in many lightweight metal structures such as warehouses, garages, and agricultural buildings as they provide strong, rigid, and supportive framework for the structure.

  • image/svg+xmlimage/svg+xml
    How Thick Should Purlins Be?

    Purlins should always be chosen with the correct thickness according to the load requirements of the structure. Typically, purlins of between 1.2 and 3.0mm thickness are appropriate for most structures. Cardinal Steels offer eaves beams as standard 190 mm deep with a 2.0 mm thickness.

  • image/svg+xmlimage/svg+xml
    What Is The Difference Between A Girt And A Purlin?

    Girts are horizontal structural members that are used to support wall panels, while purlins are vertical members used to support roof panels.

  • image/svg+xmlimage/svg+xml
    What Materials Are Used To Make Purlins?

    Purlins are typically made of galvanised steel, but other materials like aluminium, stainless steel, and reinforced steel can also be used. Cardinal Steels’ manufacture in-house at their facility in Bromsgrove. This ensures our they are of the highest quality, optimum price, and with a fast turnaround.