Open Section Type Z

The standardized thin-walled cold-rolled cross-sections, type Z, are produced based on the company’s high quality criteria covering a wide range of applications. They are produced in desired lengths up to 14m depending on the requirements of the project. It is possible to drill holes Φ6, Φ8, Φ10, Φ12.5, Φ14, Φ16, Φ18, Φ20, Φ22 at any point with excellent precision for the application of screw connections with other metal and structural elements.

Open Z-sections are usually used as purlins or purlins to support the siding or roof of the building. Obviously, the number of applications of these cross-sections is unlimited, provided that the static study of the structure has been prepared.

Sheets

They are mainly produced with high-quality and durable steel sheets, with hot galvanic protection, according to EN 10346, EN 10143 standards in terms of quality and tolerances. The thickness of the plates ranges from 1.50mm to 3.00mm. Galvanized steel sheets of 2.00mm thickness are usually used.

high strength steel sheets from DX51D up to S350GD
hot-dip galvanizing Z 70 ~ 275 gr/m²
or with aluzinc protection AZ 70 ~ 265 gr/m²

Open cross-section type Z

	Z 140	Z 180	Z 210
Nominal sheet thickness [mm]	Weight per unit length [kg/m]*
1,50	3,40	3,80	4,00
2,00	4,50	5,00	5,40
2,50	5,60	6,30	6,80
3,00	6,70	7,50	8,10

* The weight per unit length was calculated considering the specific gravity of steel = 7850 kg/m³.

The thin-walled open Z-sections are fixed to the load-bearing body by the standard bolting method. It is recommended that the support is done with screws and not with self-drilling screws or rivets. In general, in thin-walled cross-sections, welding connection is not preferred.

The specific thin-walled sections, due to their special design, have the possibility to be placed with overlap (flip over & overlap). Therefore, for the connection of the pieces, it is not necessary to use additional connectors and components, resulting in a reduction in the cost of construction.

The connection length of the overlap depends on the opening of the supports. It is recommended that the connections be made to the positions of the supports (pillars, beams). For structural constructions, the reduction in strength due to notches must be calculated taking into account what is provided by the ΕΝ 1993-1-3 standard.

Every construction project is different and at the same time unique. That is why it is not possible to have standardized Accessories / Special parts. Your company’s technical department can provide you with any necessary assistance you need to design, develop and manufacture the special parts you will need.

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