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Help CenterHigh-Quality Welded Square Tube in Various Sizes 20x20mm to 100x100mm for Structural Applications
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Introducing premium welded square tubes engineered for structural integrity and durability. Available in versatile sizes from 20x20mm to 100x100mm, these tubes deliver exceptional load-bearing capacity for construction and industrial applications. Manufactured by Hunan Yige Special Steel since 2015, our ISO-certified production ensures dimensional accuracy and consistent quality across every batch. Designed to withstand demanding environments, these tubes provide reliable performance in frameworks, support systems, and machinery components.
Core Technical Specifications:
- Material Composition: High-strength carbon steel with precise chemical composition control
- Tolerance Standards: Maintains ±0.5mm dimensional accuracy across all sizes
- Welding Technology: ERW (Electric Resistance Welding) process for uniform seam integrity
- Corrosion Resistance: Optional hot-dip galvanizing (up to 600g/m² coating)
Common Size Specifications:
| Size (mm) | Available Wall Thickness (mm) | Typical Applications |
|---|---|---|
| 20x20 | 1.2, 1.5, 2.0 | Furniture frames, light fixtures |
| 40x40 | 1.5, 2.0, 2.5, 3.0 | Shelving systems, machinery guards |
| 60x60 | 2.0, 2.5, 3.0, 4.0 | Structural supports, conveyor frames |
| 80x80 | 2.5, 3.0, 4.0, 5.0 | Building frameworks, mezzanines |
| 100x100 | 3.0, 4.0, 5.0 | Heavy-duty columns, industrial bases |
Note: Custom sizes outside this range can be discussed with our engineering team
Performance Advantages:
- Enhanced Structural Stability: 90° corners provide superior torsional rigidity compared to round tubes
- Installation Efficiency: Flat surfaces simplify welding and bracket attachment procedures
- Material Optimization: High strength-to-weight ratio reduces overall structural weight
- Quality Consistency: Automated production with real-time monitoring ensures uniform wall thickness
Industry Applications:
- Construction Sector: Building frameworks, roof trusses, and scaffolding systems
- Industrial Machinery: Equipment bases, conveyor structures, and safety guards
- Transport Infrastructure: Signage supports, guardrail posts, and bridge components
- Agricultural Systems: Greenhouse structures, livestock equipment, and irrigation frames
Manufacturing Excellence:
Our 5,000-10,000m² facility incorporates advanced ERW tube mills with automated sizing control. The production process includes:
1. Coil Preparation: Uncoiling and leveling of steel coils
2. Forming Stage: Progressive shaping through forming rolls
3. High-Frequency Welding: Precise heat application for uniform fusion
4. Sizing Control: Calibration to exact dimensions
5. Cutting: Computer-controlled cutting to required lengths
6. Surface Treatment: Optional galvanizing or painting
Partner with Hunan Yige for structural solutions that combine precision engineering with industrial-grade durability. Our global distribution network ensures timely delivery to North America, Europe, Asia, and beyond. Request a customized quotation today for project-specific requirements or discuss certification documentation with our technical team. Experience the difference of working with an ISO-certified manufacturer committed to quality and environmental responsibility.
Frequently Asked Questions
Q: What surface treatments are available for corrosion protection?
A: We offer optional hot-dip galvanizing (standard or thick coating), pre-galvanized options, and industrial-grade painting in various colors. Treatment selection depends on application environment and budget considerations.
Q: Can I request non-standard sizes outside the 20-100mm range?
A: Custom sizing is possible for bulk orders. Our engineering team can evaluate requests for sizes up to 150x150mm with proportional wall thickness adjustments.
Q: What documentation accompanies shipments?
A: All shipments include material test certificates (MTCs) verifying chemical composition and mechanical properties. Additional documentation like ISO certificates or origin statements can be provided upon request.
Q: How are tubes packaged for international shipping?
A: We use weather-resistant bundling with steel strapping, typically in bundles of 2-3 tons. Special packaging requirements for sensitive finishes can be accommodated.
Q: What's the lead time for custom orders?
A: Standard sizes ship within 15-20 days. Custom specifications require 25-35 days for production, depending on complexity and order volume.
Q: Do you provide technical support for structural calculations?
A: Our engineering department offers load-bearing capacity data and general technical guidance. For specific structural designs, we recommend consulting licensed engineers.
Q: Are samples available for material testing?
A: Sample tubes in standard sizes can be provided for quality evaluation. Custom sample production may involve minimum charges depending on specifications.
Q: What payment terms do you offer new clients?
A: Standard terms include T/T with 30% deposit and balance before shipment. Alternative arrangements can be discussed based on order value and credit terms.
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