GB700 Q235B Q345B JIS G3101 SS400 Hot Rolled Steel I Beam for Structural Construction

1．Product Overview

Hot rolled steel I beam is widely used in structural engineering, industrial construction, machinery support systems, and steel frame fabrication.

Manufactured according to GB/T11263-2010 and compatible with international standards such as JIS G3101 SS400, ASTM A36, and EN 10025

S275JR, the product provides stable load-bearing performance and reliable structural strength.

Steel I beams are designed for applications requiring high bending resistance, structural stability, and efficient weight distribution.

2．Technical Solution

The I-shaped cross section improves structural efficiency by concentrating material in the flange areas where bending stress is highest. This design helps optimize load-bearing capacity while reducing unnecessary material weight.

Hot rolling production ensures stable dimensional accuracy, consistent web thickness, and good weldability for structural fabrication and assembly.

3．Specifications

Typical EN Standard Models

4．Application

Steel I beams are commonly used for:

• Steel structure buildings
• Industrial workshops
• Bridge construction
• Machinery support frames
• Vehicle manufacturing
• Port and dock structures
• Infrastructure engineering
• Warehouse and factory construction

5．Processing

The product supports:

• Cutting
• Welding
• Drilling
• Galvanizing
• Painting
• Structural fabrication
• Custom length processing

6．Advantages

• High bending resistance and load-bearing capability
• Stable hot rolled dimensional consistency
• Good weldability and fabrication performance
• Suitable for large-span structural projects
• Compatible with international structural standards
• Available with multiple surface treatment options

7．How to Choose

Q235B and SS400 are suitable for general structural applications requiring balanced strength and cost efficiency. Q345B and SM490 are preferred for projects requiring higher yield strength and heavier load-bearing performance.

Beam dimensions should be selected according to span length, structural load, and installation conditions.

8．FAQ

Q1．What standards are supported for steel I beams
Products can be manufactured according to GB, JIS, ASTM, and EN standards.

Q2．Can customized lengths be supplied
Yes. Custom lengths are available according to project requirements.

Q3．What surface treatments are available
Black surface, painted surface, galvanized surface, and oiled surface are available.

Q4．What industries commonly use steel I beams
Applications include construction, bridge engineering, machinery manufacturing, and steel structure fabrication.

Q5．What is the minimum order quantity
The MOQ is 50 MT per size.