The most comprehensive I shape beam 7 specifications and scenarios in 2025

1. I shape beam Small and medium-sized specifications (Ⅰ20-Ⅰ40)

Typical models: Ⅰ25a (250mm high), Ⅰ36c (360mm high)

Application scenarios:
Factory track i shape steel beam (5-10 ton cranes)
Medium-sized equipment bases (press/injection molding machine foundations)
Frame columns of buildings below 3 floors

Advantages: low cost, manual handling and welding

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2. I shape beam heavy standard specifications (Ⅰ50-Ⅰ63)

Typical models: Ⅰ50b (500mm high), Ⅰ63c (630mm high)

Steel I Beam Shapes Scenario:
12-24m span factory main beams (such as automobile manufacturing workshops)
Logistics warehouse shelf columns (single column load-bearing 8-15 tons)
Highway ramp support beams

Case: An e-commerce warehouse uses Ⅰ63c as shelf columns, with a floor height of 8 meters and a load-bearing capacity of 12 tons

3. i-beam size Ultra-heavy specifications (W24-W36)

Representative models: W30×191 (762mm high), W36×256 (910mm high)
Scenario:
Core tube shear wall skeleton of high-rise buildings (more than 40 floors)
Cantilever bracket of bridges (bending stiffness＞2500kN·m²)
Gate track beam of hydropower station
Key indicators: Must meet ASTM A572 Gr50 tensile strength

4. I shape beam Earthquake-resistant reinforced type

Marking: Suffix with “E” (such as W27×194-E)
Features:
Charpy V-notch impact energy ≥27J (-40℃)
Carbon equivalent CEV≤0.45% Reduce welding cracks
Scenario:
Hospital/school buildings in earthquake zones (meet GB 50011 specifications)
Containment support of nuclear power facilities

5. Structural Steel I Shapes beam weather-resistant and anti-corrosion type

Material: ASTM A588 (rust rate <0.05mm/year)

Surface characteristics: reddish-brown dense rust layer

Scenario:
Exposed structure of cross-sea bridge (no painting maintenance)
Corrosion zone bracket of chemical plant