Products Description
The S275JR galvanized structural steel H-beam / I-beam is a widely used universal beam for load-bearing steel structures. It is manufactured from high-quality carbon structural steel and treated with hot-dip galvanizing or anti-corrosive coating to enhance durability and corrosion resistance.
Key Specifications:
Material Grade:
GB Standard: Q235, Q345
EN Standard Equivalent: S235JR, S275JR, S355JR
Beam Type:
H-Beam / I-Beam (Universal Beam)
Size:
Standard size: 125 × 125 × 6.5 × 9
Customized sizes available upon request
Application:
Columns, beams, bracing systems, purlins, tie bars for steel frame structures
Surface Treatment:
Hot-dip galvanized
Or two anti-corrosive primer coatings (≥ 60 μm), customizable
Certification:
ISO 9001:2000
Mill Test Certificate (EN 10204 3.1 available)
Advantages of Steel Structure Beams
Cost-effective & transportation-friendly
Optimized beam design reduces material usage and transportation costs.
High structural strength
Main beams and columns are made from high-quality structural steel beams with stable mechanical properties.
Excellent load and seismic resistance
Capable of resisting winds up to 140 km/h and earthquakes up to seismic intensity level 8.
Easy installation & dismantling
Beams can be assembled and disassembled multiple times without performance loss.
Wide application range
Suitable for factories, warehouses, office buildings, dormitories, and modular steel structures.
Environmentally friendly
Steel beams are recyclable, reduce construction waste, and minimize environmental impact.
Specification Table – Structural Steel H-Beam / I-Beam
| Item | Description |
|---|---|
| Product Name | Structural Steel H-Beam / I-Beam |
| Steel Grade | Q235, Q345, SS400, S235JR, S275JR, S355JR, ASTM A36 |
| Standard | GB / EN / ASTM |
| Technique | Hot Rolled / Cold Rolled / Galvanized |
| Length | 1–12 m or customized |
| Flange Width | 50–400 mm |
| Flange Thickness | 4.5–23 mm |
| Web Height | 100–900 mm |
| Web Thickness | 5–16 mm |
| Surface Treatment | Black, Painted, Hot-Dip Galvanized |
| Processing Service | Cutting, Welding, Punching |
| Tolerance | ±1% |
| Packing | Bundled with steel strips or as requested |
| Place of Origin | Shandong, China |
Application of Structural Steel Beams
Structural steel H-beams and I-beams are essential load-bearing components in modern engineering and construction projects. Due to their high strength, excellent load distribution, and reliable structural performance, they are widely applied across multiple industries and environments.
Civil and Industrial Building Structures
H-beams and I-beams are commonly used as columns, main beams, and secondary beams in residential, commercial, and industrial buildings. Their high load-bearing capacity and dimensional stability ensure long-term structural safety, making them suitable for factories, warehouses,
workshops, and office buildings.
Large-Span Industrial Plants and High-Rise Buildings
For structures requiring large spans or vertical load transfer, such as steel workshops, logistics centers, and high-rise buildings, structural steel beams provide excellent bending resistance and rigidity. Their optimized cross-sectional design allows for longer spans with fewer supports, improving space utilization and construction efficiency.
Seismic-Resistant and High-Temperature Working Environments
Structural steel beams perform exceptionally well in seismic zones due to their ductility and energy absorption capability. In high-temperature working environments, such as power plants and industrial facilities, H-beams and I-beams maintain stable mechanical properties and structural integrity under demanding operating conditions.
Heavy-Load Bridges and Large-Span Steel Bridges
In bridge engineering, H-beams and I-beams are widely used in bridge girders, load-bearing frames, and supporting structures. Their high strength-to-weight ratio and excellent fatigue resistance make them ideal for heavy traffic loads and long-span bridge constructions.
Heavy Equipment and Machinery Support Structures
Structural steel beams are essential for supporting heavy machinery, cranes, and industrial equipment. They provide reliable load transfer and vibration resistance, ensuring safe operation in manufacturing plants, ports, and industrial yards.
Highways and Transportation Infrastructure
H-beams and I-beams are widely applied in highway bridges, overpasses, rail transit facilities, and transportation hubs. Their standardized dimensions and ease of fabrication allow for fast installation, reduced construction time, and long-term durability under continuous dynamic loads.
Shipbuilding and Offshore Structures
In ship frameworks and offshore engineering projects, structural steel beams are used for ship skeletons, decks, platforms, and offshore support structures. With proper surface treatment, such as galvanizing or anti-corrosion coatings, these beams offer enhanced resistance to marine corrosion and harsh environments.
Mining Supports, Foundation Engineering, and Embankments
Structural steel beams play a crucial role in mining support systems, underground structures, foundation reinforcement, and embankment stabilization. Their high strength and adaptability make them suitable for complex geological conditions and heavy ground pressure applications.
Q1: What are S275JR steel beams?
S275JR steel beams are structural steel sections manufactured in accordance with EN 10025-2. The grade S275JR provides a minimum yield strength of 275 MPa and is designed for general structural applications where moderate strength and good fabrication performance are required.
Q2: Which standard governs S275JR steel beams?
S275JR steel beams are produced under EN 10025-2, the European standard for hot-rolled structural steels, which defines chemical composition limits, mechanical properties, impact toughness requirements, and delivery conditions.
Q3: What mechanical properties does S275JR steel offer?
S275JR steel typically has a minimum yield strength of 275 MPa, a tensile strength range of approximately 410–560 MPa, and good elongation. These properties ensure reliable load-bearing capacity for standard structural applications.
Q4: What does the "JR" designation mean in S275JR?
The "JR" designation indicates a minimum impact energy of 27 J tested at +20°C. This confirms adequate toughness for structures operating under normal ambient temperature conditions.
Q5: How does S275JR compare with S355JR steel beams?
Compared with S355JR, S275JR has lower yield and tensile strength but offers cost advantages for projects with moderate load requirements. S275JR is often selected when material economy and ease of fabrication are prioritized.
Q6: Is S275JR steel suitable for welding?
Yes, S275JR steel beams exhibit excellent weldability due to their low carbon content and controlled carbon equivalent. Standard welding methods can be applied without special procedures for most thicknesses.
Q7: Can S275JR steel beams be used for bolted connections?
S275JR steel beams perform well in bolted and riveted connections. Their stable mechanical properties ensure reliable performance in both static and semi-dynamic load conditions when designed according to structural codes.