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Qingdao Ruigang Steel Structure Co., Ltd. company profile
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Home > Products > Multi-Storey Steel Building > Modern Multi-Storey Steel Building with Wind Load Up to 300 km/h Hot-Dip Galvanization and Q355/Q235 Steel Grade
Product Details
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Wind Load Up to 300 km/h Multi-Storey Steel Building

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Hot-Dip Galvanization Prefab Steel Structure Building

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Q355/Q235 Steel Grade Steel Frame Structure Building

Grade:
Q235 / Q355 / Q235B / Q355B
Connection Type:
Bolted, Welded
Application:
Industrial And Commercial
Type:
Prefab Steel Structure Building
Design Standard:
AISC, MBMA, AWS, ASTM
Wind Load:
Up To 300 Km/h
Surface Treatment:
Hot-dip Galvanization, Paint Coating
Wall Cladding:
Galvanized Steel Sheet, Sandwich Panel, Metal Cladding
Grade:
Q235 / Q355 / Q235B / Q355B
Connection Type:
Bolted, Welded
Application:
Industrial And Commercial
Type:
Prefab Steel Structure Building
Design Standard:
AISC, MBMA, AWS, ASTM
Wind Load:
Up To 300 Km/h
Surface Treatment:
Hot-dip Galvanization, Paint Coating
Wall Cladding:
Galvanized Steel Sheet, Sandwich Panel, Metal Cladding
Product Description
Modern Multi-Story Steel Structure Residential High-Rise Building
Multi-story steel structure buildings offer unparalleled strength, flexibility, and durability, making them ideal for modern urban construction. These buildings are designed with a robust steel framework that ensures structural integrity while providing the flexibility to accommodate various architectural styles and functions. With quick construction timelines and superior resistance to environmental factors such as wind, fire, and seismic activity, multi-story steel structures are the future of high-rise buildings, combining efficiency, safety, and sustainability for the urban skyline.
Technical Specifications
Component Specification
Main Steel Q355, Q235, Q355B, Q235B, etc.
Anti-rust Protection Hot-dip galvanized or anti-rust painting
Purlin and Girts Cold-rolled C or Z steel, Q355 or Q235
Column & Beam Welded or Hot rolled H-section
Connection Method Welding connection or bolt connection
Wall & Roof Sandwich panel or steel sheet
Door Rolled up door or Sliding door
Window Plastic steel or Aluminum alloy window
Surface Hot-dip galvanized or painted
Crane 5MT, 10MT, 15MT, and more
Modern Multi-Storey Steel Building with Wind Load Up to 300 km/h Hot-Dip Galvanization and Q355/Q235 Steel Grade 0
Advanced Painting System
Molecular Passivation & Reactive Priming
The foundational layer effectively neutralizes oxidation on the steel substrate, forming a protective, non-porous seal that blocks moisture and saline penetration.
Cross-Linked Molecular Armor
A high-build epoxy barrier offering superior mechanical strength and chemical resistance, safeguarding the surface from industrial pollutants and harsh, corrosive environments.
Atmospheric Resilience & Chromatic Shield
The top-grade polyurethane finish ensures lasting color integrity and UV protection, preserving a professional appearance over time.
Common Applications
Agile Corporate & Commercial Spaces
Column-free designs optimize usable floor space, offering flexible structural solutions that adapt to the evolving needs of modern workplaces.
Fast-Track Urban Residential Projects
Swift construction of high-performance residential buildings, with built-in fire-resistant features for added safety.
Efficient Institutional & Healthcare Facilities
Off-site fabrication minimizes disruption to local communities while accelerating construction timelines for essential public services.
High-Capacity Mobility & Vertical Parking Solutions
Scalable, robust parking structures engineered to handle high volumes of traffic and alleviate urban congestion challenges.
Why Choose Our Steel Structures
Computational Stewardship & Material Efficiency
Advanced structural modeling minimizes material waste, driving cost savings while boosting sustainability.
Automated Precision & Technical Excellence
Digitally-controlled manufacturing ensures precise, millimeter-level accuracy for flawless assembly in the field.
Integrated Project Management
A single-source partner overseeing the entire structural lifecycle from design to handover, streamlining logistics and reducing complexities.
Global Compliance & Lifespan Support
Full adherence to international engineering standards (AISC, Eurocode, GB) coupled with ongoing technical support for the entire lifecycle of the project.
Packing & Loading
Precision Structural Encapsulation
A multi-layered protection system ensures components remain intact and finishes preserved during international shipping.
Advanced Volumetric Optimization
Spatial algorithms optimize container packing in 40ft High Cube units, minimizing shipping costs and reducing the carbon footprint.
Seamless Just-in-Time Logistics
A synchronized supply chain tailored to the construction timeline, ensuring timely material delivery and maintaining continuous project progress.
Modern Multi-Storey Steel Building with Wind Load Up to 300 km/h Hot-Dip Galvanization and Q355/Q235 Steel Grade 1
Frequently Asked Questions
Are you a manufacturer or trading company?
As a direct manufacturing facility based in Qingdao, China, we pride ourselves on our stringent quality management system, expert design team, robust production capabilities, and extensive manufacturing experience.
How about your quality control?
  • We only cooperate with high-quality raw material suppliers
  • Our workers are all certified and regularly assessed
What's the delivery time?
Usually 30 days. We have perfect management plans for each project to ensure timely delivery.
Do you offer installation service?
Yes, we provide detailed installation drawings and videos. Generally, you can install locally as components are prefabricated and bolted. Otherwise, we can send engineers to guide installation.
What's the payment term?
We have two payment terms: 1) 30% advance payment before production by T/T, and 70% balance by T/T before shipping. 2) 100% irrevocable L/C
How to get a fast quotation?
Please send us your project preliminary drawing, and we will quote accordingly within 2 days.
Is your price competitive compared with other companies?
As a direct factory, yes, our prices are competitive, and both price and quality are guaranteed.
Our Steel Structure Fabrication Factory
Qingdao Ruigang Heavy Industry Co., Ltd. stands as a global leader in steel infrastructure, offering comprehensive turnkey solutions that turn architectural visions into structural realities. Our state-of-the-art 50,000m² manufacturing facility is home to a dedicated team of 115 engineering and fabrication specialists, delivering high-precision projects at scale. Located in the strategic West Coast New District, we are perfectly positioned near the Port of Qingdao, providing seamless access to a world-class logistics network. This proximity ensures efficient, rapid global distribution and the timely, sustainable delivery of exceptional structural solutions to clients worldwide.
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