Cold-rolled sections

C and Z purlins

The cold-rolled structural elements in Alternativa’s range comprise C and Z purlins, made from high-quality structural steel sheet protected on both sides with a zinc coating of 275 g/m².

The range

Two purlins, one purpose

These elements are most often used as the secondary structure of a roof or a façade. Using cold-rolled sections reduces the overall weight of the structure and speeds up installation. Because they are made from galvanised steel sheet, no further anti-corrosion protection is needed.

The sections are produced in lengths to the customer’s requirement, which cuts down needless waste and makes installation simple and quick.

C purlin

C sections are used as structural elements for walls and roofs, as the secondary structure carrying roof and façade cladding, and also as frames for windows and doors in industrial buildings whose primary structure is concrete or steel.

Their main advantages over conventional steel sections are low weight, high load capacity and simple installation. The sections can be boxed together or formed into an “I” section.

They are made from high-quality structural steel sheet protected on both sides with a zinc coating of 275 g/m². To the customer’s drawing, the holes needed to bolt the sections together can be punched during production.

C sections are produced in lengths to the customer’s requirement, which gives the fullest use of material and reduces waste. Compared with conventional rolled sections they are considerably lighter and need no further anti-corrosion protection.

Alternativa

Alternativa d.o.o. produces C sections in the following sizes:

  • 100 × 50 × 20 mm
  • 125 × 50 × 20 mm
  • 150 × 50 × 20 mm

Standard section thicknesses run from 2.00 to 2.50 mm; on special request, thinner gauges can also be made.

Z purlin

Z sections are likewise made from high-quality structural steel sheet protected on both sides with a zinc coating of 275 g/m².

They are used chiefly as secondary structural elements in roof and façade systems. Low weight, high material efficiency and simple installation make them a practical solution for buildings of every kind.

The sections are produced to the required length, up to a maximum of 3 m, which reduces waste and simplifies fitting. Compared with conventional rolled sections, Z purlins are considerably lighter and need no further anti-corrosion protection.

Alternativa d.o.o. produces Z sections in sizes from 50 to 150 mm, in thicknesses from 1.00 to 2.50 mm. On special request, thinner sections can also be made.

We cut to length from your drawing

Send us the sizes, the thickness and the lengths you need — we make the sections to measure, and from your drawing we can punch the holes for bolting them together in advance.

Alternativa / Documentation

Knowledge for your next project.

Explore our range, prepare for installation and find technical information in one place.

02
From preparation to installation

Installation manual

Practical guidance for installing Topterm panels correctly.

03
Information for your design

Technical data sheet

Technical characteristics for your selected panel model.

The catalogue is available now. Other documents are supplied on request.