Steel Frame Building Industrial / Commercial Lightweight Galvanized Steel Structure Modular Building
Structural steel is a special type of steel product manufactured according to specific dimensions, shapes, and chemical compositions for use in building structures. Depending on project requirements, structural steel can be available in various shapes, sizes, and grades. Some are hot-rolled or cold-rolled, while others are welded from flat or bent plates. Commonly used structural steel profiles include I-beams, hollow section steel, channel steel, angle steel, and plates.
International Standards for steel Frame Structure
GB 50017 (China): Chinese national standard, specifying design loads, detailed construction, durability, and safety requirements.
AISC (USA): North American recognized authoritative guideline for loads, structural design, and connections.
BS 5950 (UK): Based on a comprehensive consideration of safety, economy, and structural efficiency.
EN 1993 – European Code 3 (EU): European standard for integrated design of steel structures.
| Standard | National Standard | American Standard | European Standard | |
| Introduction | It features the national policies (standards of GB) as the core, supplemented by the industry regulations, covering the whole process including design, construction and acceptance. | Focusing on ASTM material standards and AISC design specifications, we focus on combining market independent certification with industry standards. | EN series of standards (European standards) | |
| Core Standards | Design standards | GB 50017-2017 | AISC(AISC 360-16) | EN 1993 |
| Material standards | GB/T 700-2006、GB/T 1591-2018 | ASTM Internationa | EN 10025 series developed by CEN | |
| Construction and acceptance standards | GB 50205-2020 | AWS D1.1 | EN 1011 series | |
| Industry-specific standards | For example: JT/T 722-2023 in bridge, JGJ 99-2015 in building | |||
| Required Certificates | Steel structure engineering professional contracting qualification (special grade, first class, second class, third class) | AISC Certification | CE Mark, | |
| German DIN Certification, | ||||
| UK CARES Certification | ||||
| China Classification Society (CCS) certification, steel structural fabrication enterprise qualification certification. | FRA certification | |||
| Test reports of material mechanical properties, weld quality etc.issued by a third party testing body. | ASME | |||
Standard cross-sections are specified in detail in standards around the world; in addition, there are custom cross-sections.
H-beams / I-beams (represented by the capital letter "I" in the UK: including general beams UB and general columns UC; Europe has various types such as IPE, HE, HL, HD; the US has WF (W-beams), also known as H-beams and many more types)
Z-beams (reverse half-flanges).
HSS (hollow structural profiles, also known as SHS (structural hollow profiles), such as square, rectangular, circular (tubular), and elliptical sections)
Angle steel (L-shaped section)
Channel steel, or C-shaped or "C"-shaped section
T-beams (T-shaped section)
Reinforcing bars, with a rectangular cross-section but insufficient thickness to be classified as plates.
Staff members are circular or square cross-sections whose length is much greater than their width.
Steel Sheets or thin metal sheets with a thickness greater than 6 mm or 1/4 inch.
Steel structures refer to structures that use steel as the primary load-bearing component. Due to their high strength, light weight, rapid construction, and good seismic performance, steel structures have been widely used in numerous fields. Their main application scenarios and areas are as follows:
Building Construction
1. Industrial Buildings - Factory Types: e.g., machining, metallurgical, and chemical plants
2. Warehouses: Large logistics and warehousing centers (including high-rise warehouses and cold chain warehouses);
3. Important Buildings - Commercial and Residential: The main frame of super high-rise buildings (e.g., skyscrapers);
Public Buildings: e.g., stadiums, exhibition halls, theaters, and airport terminals.
4. Residential Buildings: Steel-structured residential buildings.
Transportation Infrastructure
1. Bridge Engineering - Long-span Bridges - Railway/Highway Bridges
2. Rail Transit and Stations - High-speed Railway Stations, Metro Station Waiting Halls - Rail Transit Vehicles
Special Engineering and Equipment
1. Marine Engineering - Offshore Platforms: Main structure of oil drilling platforms (jacket and platform deck);
Shipbuilding
2. Lifting and Construction Machinery - Cranes - Special Vehicles
3. Large Equipment and Containers - Industrial Storage Tanks - Mechanical Equipment Frames
Other Special Application Scenarios
1. Temporary Buildings: Temporary building structures in disaster areas, exhibition halls, etc.
2. Glass dome support for large shopping malls
3. Energy Engineering: Wind turbine towers (made of high-strength rolled steel plates) and solar panels.
Cutting Process
1. Preliminary Preparation
Material Inspection
Drawing Interpretation
2. Choosing the Appropriate Cutting Method
Flame Cutting: Suitable for thicker mild steel and low-alloy steel, ideal for rough machining.
Water Jet Cutting: Suitable for a variety of materials, especially heat-sensitive steel or high-precision, special-shaped parts.
Welding Processing
This process uses heat, pressure, or both (sometimes with filler materials) to achieve atomic bonding at the joints of steel structural components, thus forming a solid, integrated structure. This is a core process for connecting components in steel structure manufacturing and is widely used in buildings, bridges, machinery, ships, and other fields, directly determining the strength, stability, and safety of steel structures.
Based on the construction drawings or welding procedure qualification report (PQR), clearly define the weld joint type, groove dimensions, weld dimensions, welding position, and quality grade.
Punching Processing
This process involves mechanically or physically creating holes in steel structural components that meet design requirements. These holes are primarily used for connecting components, routing pipelines, and installing accessories. It is a crucial process in steel structure manufacturing to ensure component assembly accuracy and joint strength.
Based on the design drawings, specify the hole location (coordinate dimensions), number, diameter, accuracy level (e.g., ±1mm tolerance for standard bolt holes, ±0.5mm tolerance for high-strength bolt holes), and hole type (round, oblong, etc.). Use a marking tool (such as a steel tape measure, stylus, square, or sample punch) to mark the hole locations on the component surface. Use a sample punch to create locating points for critical holes to ensure accurate drilling locations.
A wide variety of surface treatment processes are available for steel structure building, effectively enhancing their corrosion and rust resistance, as well as their aesthetic appeal.
Galvanizing is a classic choice for its excellent rust resistance.
Powder coating offers rich colors and strong weather resistance.
Epoxy coating offers excellent corrosion resistance and is suitable for challenging environments.
Epoxy zinc-rich coating provides effective electrochemical protection with its high zinc content.
Painting offers flexibility and cost-effectiveness, meeting diverse decorative needs.
Black oil coating is an economical option for simple corrosion protection applications.
Our senior staff of experts are skilled structural engineers and technical specialists with innovative design concepts and extensive project experience, who have an exceptional understanding of mechanics of steel structures and related industry standards.
Using professional design software such as AutoCAD, Tekla Structures, we develop a complete visual design system, from 3D models to 2D engineering drawings, which simulate components dimensions, joint configurations and spatial arrangement. We provide a full suite of services during the course of project development – from preliminary schematic design through to detailed construction drawings, from intricate joint optimization to overall structural verification. We execute keystone features down to millimeter, and maintain a proper balance between rigorous technical and construction feasibility.
We are always customer focused. Based on holistic scheme comparison and mechanical performance simulation, tailor-made, most cost effective design solutions are provide for a variety of application scenarios (industrial site, commercial complexes, bridges and plank roads, etc.). We minimize the use of materiel, streamline the construction process and ensure that the building is safe. Our services are end to end, from delivery of drawing to on-site technical briefing. We are professional in making every steel structure project be carried out efficiently, Which lend us high reputation, and make us your reliable one-stop design partner.
The packaging method for steel structures should be determined based on factors such as component type, size, transportation distance, storage environment, and required protection. The goal is to prevent deformation, rust, and damage during transportation and storage.
Common steel structure packaging methods include:
1. Bare Packaging (Unpackaged)
Applicable for: Large and heavy steel components (such as steel columns, beams, and large trusses).
Features: No additional packaging materials are required, allowing direct loading and unloading via lifting equipment. However, components must be properly secured during transportation to prevent shaking and collision.
Supplementary Protection: Component connections (such as bolt holes and flange surfaces) can be protected with temporary covers or plastic wrap to prevent intrusion and damage.
2. Bundled Packaging
Applicable for: Small to medium-sized, regularly shaped steel components (such as angle steel, channel steel, steel pipes, and small connecting plates) in large quantities.
Note: The bundling should be appropriately tight. Too loose a bundling can easily cause component shifting, while too tight a bundling can cause deformation.
3. Wooden Box/Wooden Frame Packaging
Applicable Scenarios: Small precision steel components (such as steel components in mechanical parts and high-precision connectors), fragile parts (such as small parts like bolts and nuts), or steel components requiring long-distance transportation or export.
Advantages: Excellent protection, effectively shielding against environmental influences, suitable for long-distance transportation and storage in complex environments.
4. Special Protective Packaging
For Corrosion Protection: For steel components that will be stored for long periods or transported in humid environments, in addition to the above packaging methods, anti-rust treatment is required.
For Deformation Protection: For slender, thin-walled steel components (such as slender steel beams and thin-walled steel members), additional support structures (such as wooden or steel brackets) should be added during packaging to prevent bending and deformation due to uneven loads during transportation and storage.
Transportation: Express (Sample Delivery), Air, Rail, Land, Train, Sea shipping (FCL or LCL or Bulk)
From the moment your product is delivered, our professional team will provide comprehensive support throughout the installation process, offering meticulous assistance. Whether optimizing on-site installation plans, providing technical guidance on key milestones, or collaborating with the construction team, we strive to ensure an efficient and precise installation process, ensuring the stability and safety of your steel structure.
During the after-sales service phase of the manufacturing process, we provide maintenance recommendations tailored to the product's characteristics and answer questions regarding material care and structural durability.
If you encounter any product-related issues during use, our after-sales team will respond promptly, providing professional technical expertise and a responsible attitude to resolve any issues.
Q: Are u a manufacturer?
A: Yes, we are spiral steel tube manufacturer locates in Tianjin city, China
Q: Can I have a trial order only several tons?
A: Of course. We can ship the cargo for u with LCL serivece.(Less container load)
Q: If sample free?
A: Sample free, but the buyer pays for the freight.
Q: Are you gold supplier and do trade assurance?
A: We 13 years gold supplier and accept trade assurance.













