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S4 x 7.7 x 10 ft Galvanized Steel I Beam
S4 x 7.7 x 10 ft Galvanized Steel I Beam
The S4 x 7.7 x 10 ft galvanized steel I beam is a high-strength structural steel section widely used in construction, industrial frameworks, and infrastructure engineering. Manufactured in compliance with ASTM A992 and ASTM A123 standards, this beam provides excellent load-bearing capacity, dimensional stability, and long-term corrosion resistance due to its hot-dip galvanized coating.
It is designed for demanding environments such as bridges, warehouses, factories, and outdoor structural systems, where durability and safety are critical
Steel I Beam S4 x 7.7 x 10 Galvanized Supplier
Steel I Beam S4 x 7.7 x 10 Galvanized is a structural steel profile designed to provide exceptional load-bearing performance while maintaining long-term durability in outdoor and corrosive environments. Manufactured from premium structural carbon steel and protected through a hot-dip galvanizing process, this galvanized I beam offers superior resistance to rust, weathering, and atmospheric corrosion.
Widely used in steel buildings, warehouses, solar mounting systems, bridges, industrial platforms, utility structures, equipment supports, and infrastructure projects, galvanized steel I beams deliver high strength-to-weight ratios and lower lifecycle maintenance costs compared with uncoated carbon steel sections.
At Xi'an Dongmeng Group Co., Ltd., we manufacture and supply galvanized structural steel beams for EPC contractors, engineering companies, distributors, wholesalers, fabricators, and large-scale construction projects worldwide.
Key Features
Section Profile
The "S" shape of this I-beam provides an optimized strength-to-weight ratio, with the flanges offering excellent resistance to bending moments and the web providing strong vertical support.
Load-Bearing Capacity
Engineered to handle substantial weight loads while maintaining structural integrity, making it suitable for beams, columns, and framing in various construction projects.
Corrosion Resistance
The steel is hot-dip galvanized with a protective zinc coating that provides superior resistance against rust and corrosion, extending the product's lifespan even in harsh environments.
Long-Lasting Protection
The galvanized finish ensures the steel maintains its strength and appearance over time, reducing maintenance costs and increasing durability.
Technical Specifications
| Item | Specification |
|---|---|
| Product Name | Galvanized Steel I Beam |
| Section Size | S4 x 7.7 |
| Length | 10 ft (custom available) |
| Material Grade | ASTM A992 / ASTM A36 |
| Surface Treatment | Hot-Dip Galvanized |
| Coating Standard | ASTM A123 |
| Yield Strength | ≥ 50 ksi (345 MPa) |
| Tensile Strength | 450–550 MPa |
| Application | Structural / Construction / Industrial |
CHEMICAL & MECHANICAL PROPERTIES
Mechanical Properties:
Yield Strength: ≥ 345 MPa
Tensile Strength: 450–550 MPa
Elongation: ≥ 20%
Chemical Composition (Typical ASTM A992):
Carbon (C): ≤ 0.23%
Manganese (Mn): 0.5–1.5%
Phosphorus (P): ≤ 0.04%
Sulfur (S): ≤ 0.05%
Applications
Building Construction
● Ideal for use in residential and commercial building frameworks, including roof trusses, floor joists, and support beams
● Provides reliable structural integrity for multi-story buildings and warehouses
Industrial Applications
● Suitable for industrial facilities requiring heavy load-bearing capacity
● Commonly used in manufacturing plants, storage facilities, and equipment support structures
Bridge and Infrastructure
● Can be used in pedestrian bridges and small span bridges
● Provides durable support for infrastructure projects requiring long-term performance in various weather conditions
Renovation Projects
● Great for retrofitting and upgrading existing structures
● Galvanized coating prevents damage from exposure to moisture and harsh elements
Advantages
Cost-Effective Solution
► Precisely engineered dimensions minimize material waste
► Lower maintenance costs due to superior corrosion resistance
Easy Installation
► Standardized sizes ensure compatibility with most construction systems
► Lightweight compared to comparable strength options, facilitating easier handling and installation
Environmental Sustainability
► Recyclable steel material reduces environmental impact
► Durable product extends replacement cycles, reducing resource consumption
Quality Assurance
All galvanized steel I beams are produced under strict quality control systems. Each batch undergoes:
Dimensional inspection
Mechanical property testing
Zinc coating thickness testing
Third-party inspection (optional)
We ensure compliance with ASTM international standards and provide full traceability reports for every shipment.
Processing Performance Analysis
Cutting Performance
Steel I beams can be processed through:
CNC plasma cutting
Laser cutting
Flame cutting
Saw cutting
High dimensional precision can be achieved for structural assemblies.
Drilling & Punching
Suitable for:
Anchor holes
Connection plates
Solar mounting systems
Steel framework assemblies
Bending & Forming
The material exhibits excellent structural formability while maintaining mechanical integrity.
Welding Performance Analysis
Galvanized structural steel beams provide excellent weldability.
Recommended welding methods:
SMAW
GMAW (MIG)
FCAW
SAW
For galvanized surfaces, local coating removal before welding is recommended to ensure optimal weld quality.
Benefits:
Strong welded joints
Stable structural performance
Suitable for heavy-duty construction applications
Corrosion Resistance Analysis
Hot dip galvanizing creates a metallurgically bonded zinc coating that protects the steel through:
Barrier Protection
The zinc layer isolates steel from moisture and oxygen.
Cathodic Protection
Even if coating damage occurs, zinc sacrifices itself to protect exposed steel.
Long-Term Service Life
Expected service life:
| Environment | Service Life |
| Rural | 50–100 Years |
| Urban | 30–70 Years |
| Industrial | 20–50 Years |
| Coastal | 15–40 Years |
Engineering Expertise
More than 20 years of experience in structural steel manufacturing and export.
OEM Structural Fabrication
Customized drilling, cutting, welding and assembly services.
Strict Quality Control
Comprehensive inspection procedures throughout production.
Global Project Experience
Supplying EPC contractors, distributors and infrastructure projects worldwide.
Fast Delivery
Efficient production scheduling and global logistics solutions.
Send us your drawings, specifications, quantities, coating requirements and project details to receive a fast quotation and technical recommendation.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734
INSPECTION & QUALITY CONTROL
Every batch undergoes:
Raw Material Inspection
Chemical analysis
Material verification
Production Inspection
Dimension inspection
Surface inspection
Coating thickness testing
Final Inspection
Mechanical testing
Zinc coating verification
Packaging inspection
Available Documents:
EN 10204 3.1 MTC
Third-party Inspection Reports
SGS Inspection
BV Inspection
TUV Inspection
PACKAGING & DELIVERY
Steel bundle packaging with steel straps
Waterproof wrapping for export protection
Standard seaworthy packaging
Fast production lead time for bulk orders
FAQ
What is the difference between galvanized and black steel I beams?
Galvanized I beams feature a zinc coating that significantly improves corrosion resistance and service life.
Can you provide custom beam lengths?
Yes. Custom lengths, cutting and fabrication services are available.
What galvanizing standard do you follow?
ASTM A123, EN ISO 1461 and related international galvanizing standards.
Can you provide mill test certificates?
Yes. EN 10204 3.1 MTC is available.
What zinc coating thickness can you provide?
Typically Z275 to Z600 depending on project requirements.
Is third-party inspection available?
Yes. SGS, BV, TUV and customer-appointed inspectors are accepted.
What is your MOQ?
Flexible MOQ depending on beam size and project quantity.
Can beams be pre-drilled?
Yes. CNC drilling and fabrication services are available.
Which industries commonly use galvanized I beams?
Construction, solar energy, infrastructure, agriculture and industrial manufacturing.
How long is delivery time?
Typically 7–25 days depending on specifications and order quantity.
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