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Help CenterDurable Welded Square Tube Made of Carbon Steel for Construction and Framing Projects
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Engineered for structural integrity in demanding construction environments, our carbon steel welded square tubes provide reliable support for framing projects requiring exceptional durability.
Manufactured since 2015 in our 5,000-10,000㎡ facility, these precision-welded tubes undergo rigorous quality control to meet international standards. With ISO9004 and ISO14000 certifications, we deliver consistent performance across diverse applications from building frameworks to industrial structures.
Key Technical Advantages:
- High Load-Bearing Capacity: Carbon steel composition ensures superior strength-to-weight ratio
- Precision Welded Seams: Continuous welding process creates uniform structural integrity
- Corrosion Resistance: Optional surface treatments available for harsh environments
- Dimensional Consistency: Tight tolerance control (±0.5mm) for seamless integration
Common dimensional specifications include:
| Outside Dimension (mm) | Wall Thickness (mm) | Standard Length (m) |
|---|---|---|
| 20×20 to 50×50 | 1.5-3.0 | 6.0 |
| 60×60 to 100×100 | 2.5-5.0 | 6.0/12.0 |
| 120×120 to 200×200 | 4.0-8.0 | 12.0 |
Note: Custom dimensions and specifications available upon request
Installation benefits include:
- Compatibility with standard welding and bolting techniques
- Minimal on-site modification required due to precise manufacturing
- 90° angles facilitate straightforward alignment in framing systems
Performance Comparison:
| Property | Our Product | Industry Standard |
|---|---|---|
| Yield Strength | ≥235 MPa | ≥205 MPa |
| Straightness Tolerance | ≤1.5mm/m | ≤2.0mm/m |
| Surface Finish | Class B (ISO 8501) | Class C (ISO 8501) |
Backed by our global supply experience across 5 continents, these structural tubes undergo comprehensive testing including dimensional verification, visual inspection, and random destructive testing. Our manufacturing process incorporates automated optical measurement systems ensuring consistent wall thickness and angular accuracy.
Frequently Asked Questions
Q: What surface protection options are available?
A: Standard mill finish is provided, with optional hot-dip galvanizing or primer coatings available for corrosion protection in challenging environments.
Q: Can I request custom lengths beyond standard sizes?
A: Yes, we accommodate custom cutting from 1m to 14m lengths with precision square-cut ends upon request.
Q: What quality documentation accompanies shipments?
A: All shipments include material test certificates detailing chemical composition and mechanical properties, along with inspection reports.
Q: How does welded construction compare to seamless tubes for structural applications?
A: Welded tubes offer comparable strength at reduced cost for non-pressure applications, with the added benefit of consistent wall thickness throughout the length.
Q: What packaging methods are used for international shipping?
A: We utilize weather-resistant bundling with steel strapping, with options for wooden crating or container optimization based on destination requirements.
Q: Are samples available for testing?
A: Sample sections are available for structural testing and compatibility checks with your connection systems.
Q: What is the typical production lead time?
A: Standard specifications ship within 15-25 days, while custom orders require 30-45 days depending on complexity.
Optimize your structural projects with tubing that combines manufacturing precision with material reliability. Our team provides technical consultation for load calculations and specification matching. Request project-specific quotations including volume discounts for large-scale developments. Contact our engineering support today to discuss your framing requirements or schedule a virtual factory tour.
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