Steel is a strong metal alloy made mainly from iron (Fe) and carbon (C). It is widely used in construction, architecture, buildings, bridges, machinery, and manufacturing.

There are several main types of steel:

1. Types of steel

1. Carbon Steel

Used for structural frames, beams, columns, plates, and general construction.

  • Low carbon steel

  • Medium carbon steel

  • High carbon steel

2. Stainless Steel

Excellent corrosion resistance and attractive appearance.

  • SUS 304

  • SUS 316

  • SUS 201

Used for kitchens, handrails, doors, and decoration.

3. Alloy Steel


Contains additional elements such as chromium, nickel, or molybdenum to improve strength, hardness, or durability.

4. Galvanized Steel

Steel coated with zinc to prevent rust.

  • Roofing sheets

  • Steel frames

  • Outdoor structures

5. Weathering Steel (Corten Steel)

Develops a protective rust-like surface.

  • Architectural facades

  • Landscape design

  • Outdoor sculptures

2. Common structural steel sections

Steel section

Common application

I-Beam / H-Beam

Columns and beams

C-Channel

Roof structures and framing

L-Angle Steel

Supports and connections

Square Hollow Section (SHS)

Frames and columns

Rectangular Hollow Section (RHS)

Canopies and structures

Round Steel Pipe

Railings and columns






3. Which type of steel do you want to learn about?