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Pipe‑Based Steel Structure
  • Pipe‑Based Steel StructurePipe‑Based Steel Structure

Pipe‑Based Steel Structure

Guojian (Tianjin) Steel Co., Ltd. specializes in the production of high-quality Pipe‑Based Steel Structure, including square, rectangular, and circular sections. Manufactured from high-strength carbon steel and available with various anti-corrosion treatments, these products offer structural stability, high load-bearing capacity, and exceptional durability. We support custom specifications and deep processing, maintaining ample stock for bulk orders and efficient delivery.

Guojian factory's China Pipe‑Based Steel Structure are suitable for diverse projects—ranging from architectural steel structures and new energy photovoltaics to municipal infrastructure and overseas exports—and we are ready to provide project quotations and technical documentation at any time.

Key Product Advantages

1. Superior structural mechanics and balanced load-bearing capacity

2. Smooth, aesthetic appearance with excellent finished project results

3. Multiple anti-corrosion treatment options suitable for all climate conditions

4. High precision and straightness; zero-error installation

5. Lightweight design saves steel and reduces overall project costs

6. Exceptional customization and deep-processing capabilities


Specifications

Parameter

Detailed Technical Standards

Square Tube Specifications

Side length: 20×20mm–500×500mm; Wall thickness: 1.5mm–16mm; Extra-large sizes available upon request

Rectangular Tube Specifications

Dimensions: 30×20mm–600×400mm; Wall thickness: 1.5mm–16mm; Full range of sizes available

Round Tube Specifications

Outer diameter: 20mm–377mm; Wall thickness: 1.2mm–14mm

Cross-sectional Dimension Tolerance

±0.5mm–±3mm (National high-precision controllable range)

Straightness Standard

≤1.5mm/1000mm; the entire pipe is straight with no twisting or bending

Anti-corrosion Options

Black steel (natural finish), hot-dip galvanizing, Zn-Al-Mg alloy, outdoor anti-corrosion paint (customizable colors)

Hot-dip Galvanized Coating Thickness

60–100μm; strong adhesion, resistant to peeling

Zn-Al-Mg Performance

Salt spray resistance is 3–5 times that of standard galvanizing; features self-healing anti-corrosion properties for scratches; suitable for highly corrosive coastal environments

Q235B Yield Strength

≥235MPa

Q355B Yield Strength

≥355MPa

Tensile Strength

375–500MPa; high toughness, resistant to fracture and deformation

Elongation

≥26%; excellent welding and bending performance


Product Instructions

1. Stacking and Storage Instructions

• Pipes must be stored elevated off the ground to prevent oxidation and rusting caused by ground moisture or standing water.

• Stack separately by specification, material, and anti-corrosion treatment type; do not mix or use incorrectly.

• For long-term storage, cover with rainproof and sun-resistant tarps to minimize surface oxidation and flash rust.

2. Cutting and Processing Instructions

• Prioritize cold-cutting methods for on-site cutting to ensure smooth, burr-free edges.

• Exposed cut ends must undergo rust removal, touch-up painting, and anti-corrosion treatment to prevent the spread of rust.

3. Welding Instructions

• Use welding electrodes compatible with the specific pipe material to ensure full, strong welds.

• For outdoor load-bearing structures, prioritize anti-corrosion repair at weld locations after welding is complete.

4. On-site Installation Instructions

• Before installation, inspect pipe straightness, appearance, and coating integrity; do not install deformed pipes.

• Ensure tight fit and secure bolting during frame assembly; perform final alignment before completing the fixation.

5. Routine Maintenance Instructions

• Conduct annual inspections of welds, connectors, and the anti-corrosion condition of pipe surfaces.

• Promptly apply anti-corrosion touch-ups to localized scratches or areas with paint loss to extend the service life of the overall structure.

Pipe Based Steel Structure

Key Concerns of Customers

1. Concerns about insufficient wall thickness, overstated specifications, or material thinning

Our Pipe‑Based Steel Structure feature accurate labeling and actual thickness with controlled tolerances; wall thickness is uniform across batches. We support third-party testing and weight verification, eliminating issues with severe negative deviations and meeting engineering supervision acceptance standards.

2. Concerns about susceptibility to rust and short outdoor service life

Our galvanized and Zn-Al-Mg coated pipes feature dense, uniform coatings free from bare spots or black marks. They offer superior weather resistance and long-term stability outdoors, significantly reducing future maintenance costs.

3. Concerns about bending, deformation, poor straightness, or loose assembly

Our entire pipe range undergoes automated straightening and precision end-cutting, ensuring straightness without twisting—ideal for high-standard prefabricated construction projects.

4. Concerns about unstable material quality or failure to meet load-bearing requirements

We use only genuine, new Q235B/Q355B base materials. Each batch comes with material certificates and mechanical property reports, ensuring consistent quality and a high safety factor for load-bearing.

5. Concerns about project delays or unreliable delivery

We maintain large stock reserves and stable production line capacity, enabling us to handle urgent orders and large-scale project contracts.



Hot Tags: Pipe-Based Steel Structure, Steel Pipe Structure Manufacturer, Custom Steel Pipe Structures
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Contact Info
  • Address

    No. 2, Expressway Auxiliary Road, South Area of High-tech Industrial Park, Zitai Economic and Technological Development Zone, Tianjin, China

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