1. S280
Definition: The letter "S" stands for structural steel. "280" stands for minimum yield strength (MPa).
Features: High strength, flexible and durable.
Areas of Use: Light steel structures, roof systems, general construction applications.

2. S235
Definition: Structural steel with a minimum yield strength of 235 MPa.
Features: Easy to form and weld thanks to its low carbon content.
Areas of Use: General construction applications, profile and beam production.

3. S355
Description: High strength structural steel with a minimum yield strength of 355 MPa.
Features: Higher strength and hardness. Can withstand heavy loads.
Areas of Use: Bridges, heavy structural elements, industrial buildings.

4.DX51D
Description: It is a hot dip galvanized sheet type.
Features: Corrosion resistant, lightweight, easy to shape.
Areas of Use: Roof coverings, wall coverings, drainage systems.

5.DX52D
Description: Similar to DX51D, but with higher shaping capabilities.
Features: More flexible and easy to shape.
Areas of Use: Thin metal sheets and applications requiring detailed processing.

6. AISI 304 (Stainless Steel)
Description: Austenitic stainless steel type.
Features: Corrosion resistant, hygienic and aesthetic.
Areas of Use: Food industry, medical sector, decorative applications.

7. S500
Description: High strength steel with a minimum yield strength of 500 MPa.
Features: Extremely durable, hard, resistant to heavy loads.
Areas of Use: Bridges, cranes, heavy machinery construction.
These qualities and classifications determine the mechanical and chemical properties of the sheets. These values should be taken into consideration to make a suitable selection for the project.