NBS Source
Sigma Purlins


The Sigma purlin is used for both roof and wall applications and is a supplement to the existing Z purlin. Purlins are installed with a combination of cleats and sleeves where required in the design, to provide overall strength.

Manufactured in accordance with BS EN 10326. Base steel is galvanized according to the Sendzimir principle with a zinc coating of 275 g/m², divided on both sides of the steel.

General information


Pr_20_76_51_21 Cold-formed galvanized steel sectionsPrimary


G12/330 Proprietary metal members

Specification data - Cold-formed galvanized steel sections Enhanced data

Standard product features


53 mm.

Product Options

Load tables:

Consult manufacturer's literature for further information.

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Z Purlins

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