Purlins

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Purlins are used predominantly in rural, agricultural and industrial structures to support roof and wall sheeting. Z purlins can be used in single spans and also lapped to increase strength and capacity. C purlins can also be used in single spans and continuously across roof structures.

Dynamic Steel is proud to offer a comprehensive steel purlin rolling service with a large range of sizes and thicknesses available. Whether you need Z or C purlins, Dynamic Steel is able to help.

Our purlins are made from high tensile, galvanised steel with BlueScope material, Z350 coating to protect against environmental damage. All our purlins can be rolled to your exact measurements and punched to suit your needs. Not only does this make installation simple but will also leave a professional finish.

C/Z Section Dimensions

C Purlin

Catalogue Number t (mm) D (mm) B (mm) L (mm) Mass per unit length kg/m Price per meter
C10012
1.2
102
51
12.5
2.10
C10015
1.5
102
51
13.5
2.62
C10019
1.9
102
51
14.5
3.29
C15012
1.2
152
64
14.5
2.89
C15015
1.5
152
64
15.5
3.59
C15019
1.9
152
64
16.5
4.51
C15024
2.4
152
64
18.5
5.70
C20015
1.5
203
76
15.5
4.49
C20019
1.9
203
76
19.0
5.74
C20024
2.4
203
76
21.0
7.24
C25019
1.9
2.54
76
18.5
6.50
z purlin

Z Purlin

Catalogue Number t (mm) D (mm) E (mm) F (mm) L (mm) Mass per unit length kg/m
Z15012
1.2
152
65
61
15.5
2.89
Z15015
1.5
152
65
61
16.5
3.59
Z15019
1.9
152
65
61
17.5
4.51
Z15024
2.4
152
66
60
19.5
5.70
Z20015
1.5
203
79
74
15.0
4.49
Z20019
1.9
203
79
74
18.5
5.74
Z20024
2.4
203
79
73
21.5
7.24
Z25019
1.9
254
79
74
18.0
6.50
Z purlins have minimum order quantities at 100m.

Purlins Frequently Asked Questions

What is the purpose of purlins?
Purlins are horizontal beams used along the length of a roof to support the roof’s rafters or decking and are used to prevent a roof from sagging under its own weight.
What is the difference between a purlin and a rafter?

Rafters are sloped beams – usually made from wood or steel – that run from the roof’s ridge to the eaves. They are designed to provide support for the external roofing material.

Purlins are beams that are placed in a perpendicular direction to the rafters.

What is the difference between a C and Z purlin?
C purlins, as their name suggests, come in the shape of the letter ‘C’ whilst ‘Z’ purlins are manufactured in the shape of a Z. C purlins are typically used to shape a building’s shell structure walls and floor joists, whilst Z purlins are commonly built to shape a building shell structure’s walls and roof joists. C purlins and Z purlins are suitable for residential homes, in sheds as well as commercial buildings.

What are Dynamic Steelform purlins made from?
Dynamic Steelform C purlins and Z purlins are made from G550 Z350 Galvanized steel. They can be cut to size or punched with holes specific to customer requirements.

 

Please contact us on 08 9434 6888 or send email to sales@dynamicsteelform.com.au for more details and prices.