en 10296-2 structural tube
2. Standard: EN 10296-2, the definitive European specification for welded circular tubes for structural engineering
3. Process: High-frequency (HF) or automated TIG longitudinal welding optimized for maximum mechanical load capacity
4. Size Range: Comprehensive metric diameters and wall thicknesses with exceptional straightness and dimensional control
5. Heat Treatment: Generally supplied in the cost-effective unannealed (as-welded) state or customized bright annealed (BA)
6. Surface Finish: Precision mechanically polished (satin/mirror finish), hairline brushed, or clean industrial descaled
7. Application: Structural frameworks, balustrades, architectural infrastructure, automotive chassis parts, and machine frames
8. Service Advantage: Sourced from premium steel strips, strict geometric tolerance checks, and fast mill stock dispatch
9. Packaging: Each structural tube individually plastic-sleeved to guarantee scratch-free delivery during transit
10. Key Advantage: Offers supreme torsional rigidity and outstanding structural stability combined with great project economy
EN 10296-2 Structural Tube – Premium European-Standard Welded Hollow Sections for High-Performance Structural Engineering
HEBEI ALL TRUST STEEL CO., LTD delivers factory-direct en 10296-2 structural tube solutions engineered for demanding mechanical and architectural applications. Our manufacturing capacity exceeds 15,000 tons per year, with a maximum outer diameter of 1016 mm, guaranteeing 100% compliance with hydraulic testing for all structural tubes. Our product range includes high grades such as 1.4301, 1.4307, 1.4401 and 1.4404, produced by precision longitudinal welding and supported by complete EN 10204 3.1 certification. Each tube is rigorously tested with eddy current and inspected for dimensions to provide maximum torsional stiffness for your structures.
What Makes EN 10296-2 Structural Tube the Industry Benchmark?
The product is a specialised European standard for welded circular stainless steel tubes intended only for mechanical and general engineering purposes. This standard emphasises the structural integrity, weldability and corrosion resistance of load bearing environments, rather than pressure rated standards.
This standard overcomes three major engineering problems: In the first place it gives a standard methodology for the selection of austenitic and ferritic-austenitic grades with a balance between cost and mechanical performance. Secondly, it discusses the durability of the weld seam in designated welding categories (W1, W1R, W2) which avoid the usual structural problems. Thirdly, it avoids over-specification by optimising for material thickness and weight without sacrificing safety.
Your structural projects need materials that can work under stress. Our tubes are characterised by high tensile strength (usually 500-700 MPa) and great elongation (A > 30% for austenitic grades) which makes them easy to be fabricated and durable.
Technical Specifications Overview
| Parameter | Specification Details |
|---|---|
| Standards Compliance | EN 10296-2 / ASTM A554 / EN 10219 / EN 10305-5 |
| Product Type | Welded Stainless Steel Structural Tube / Hollow Section |
| Material Grades | 1.4301 / 1.4307 / 1.4401 / 1.4404 / 1.4541 |
| Manufacturing Process | High-Frequency Welded (HFW) / TIG / Laser Welded / Roll Formed |
| Outer Diameter (OD) | 6.0 mm – 2000.0 mm (Round) / Square & Rectangular Available |
| Wall Thickness (WT) | 0.5 mm – 40.0 mm |
| Standard Length | 5.8 m / 6.0 m / 11.8 m / 12.0 m / Custom Cut Length |
| Surface Finish | As-Welded / Pickled / Brushed (Hairline) / Satin / Mirror Polished |
| End Type | Square Cut / Plain End (PE) / Burr-Free Faced Ends |
| NDT Testing | Eddy Current Testing / Dimensional Verification / Visual Inspection |
| Quality Certificates | EN 10204 3.1 MTC / ISO 9001:2015 / CE Certificate |
| Third-Party Inspection | SGS / BV / TUV / DNV / ABS Accepted |
Core Advantages of Our Structural Tube Solutions
Superior Material Performance
Your projects require materials that deliver consistent results under mechanical stress. Our en 10296-2 structural tube balances premium torsional strength with optimized weight parameters, making it the universal standard for mechanical and civil construction applications.
Each tube is manufactured using highest quality structural alloy matrices and gives an excellent load carrying capability. The hollow section profile generated by the roll provides better torsional rigidity than solid bars, thereby giving lower material cost while preserving structural integrity.
Rigorous Production Quality Control
We manufacture under comprehensive structural compliance codes, utilizing advanced ring forming and multi-axis CNC face finishing. Every production batch undergoes chemical composition verification and destructive weld seam flattening checks to ensure reliability.
Our quality assurance process includes continuous online eddy current tracking, laser-micrometer dimensional scaling, and micro-calibrated profile thickness monitoring. This multi-layered approach ensures complete perimeter uniformity and weld seam integrity across every meter.
Extensive Customization Capabilities
You need flexibility to match specific engineering drawings. We offer highly customizable solutions across extensive engineering metrics, supporting round, square, or rectangular profile dimensions with customized edge profiles.
Our advanced processing services include precision cutting, laser hole drilling, slot cutting, pipe bending, threading, and end beveling. Whether you require clean faced plain ends or specialized length cutting scales, we deliver exactly what your project demands.
Real-World Engineering Applications
Architectural Structural Frameworks
In coastal infrastructure, en 10296-2 structural tube serve as primary load-bearing supports for glass facades and walkways. They resist salt-spray corrosion while maintaining aesthetic finish, making them ideal for modern architectural projects.
Wastewater Treatment Infrastructure
The structural tube is used in mechanical agitators and aeration pipe systems and is constantly exposed to sulfuric acid and organic waste. This endurance gives long term operating dependability in hostile chemical conditions.
Automotive and Transport Engineering
It is utilized in the construction of bus frames and specialized rolling stock chassis. The high strength-to-weight ratio is essential for fuel efficiency and crash-load absorption under varying thermal cycles.
Industrial Equipment and Machinery
Manufacturing facilities depend on these tubes for equipment chassis, conveyor frameworks, and support structures. The combination of corrosion resistance and mechanical stability reduces maintenance costs significantly.
Quality Assurance and Testing Protocols
Our tubes are subject to a multi-stage quality assurance process with emphasis on weld seam integrity and material homogeneity. Important inspection items include Non-Destructive Testing (NDT) like Eddy Current testing (EN ISO 10893-1) to find subsurface faults.
The Flattening Test and Drift Expanding Test (EN ISO 8492/8493) are our top priority, ensuring that the weld seam does not split during deformation. The chemical composition is validated using PMI (Positive Material Identification) and Optical Emission Spectroscopy (OES).
Furthermore, for grades designed for harsh settings, intergranular corrosion testing (EN ISO 3651-2) is required to avoid weld degradation. Certified to EN 10204 Type 3.1 for complete traceability from melt to finished structural product.
Why Choose HEBEI ALL TRUST STEEL?
With more than 15 years of expertise in the stainless steel sector and strategic alliances with more than 15 certified mills, we keep a rolling inventory of over 5,000 tons. This means speedy delivery . Stock orders ship in 3-5 days, bespoke orders ship in 15-20 days .
We provide full services, including experienced technical support, tight quality control and trusted worldwide delivery capabilities. We reply within 1 hour in working time and provide full quote within 8 hours.
FAQ
Q：What mechanical structural benefit does the geometric cross-section of this tube offer?
A：The roll-formed hollow section profile delivers exceptional torsional rigidity and higher load-bearing capacity, making it the ideal engineering framework solution for civil construction, balustrades, and equipment chassis. The closed geometric shape distributes stress more evenly than open profiles.
Q：What is the difference between EN 10296-2 and EN 10217-7?
A：EN 10296-2 is for mechanical/structural use, focusing on load-bearing properties, while EN 10217-7 is for pressure purposes, requiring higher safety factors and different testing protocols. Choosing the correct standard prevents over-specification and reduces material costs.
Q：Can this structural tube be welded to carbon steel?
A：Yes, but it requires specific filler metals (like 309L) to prevent carbon migration and galvanically induced corrosion. Proper joint preparation and welding procedures ensure long-term joint integrity in mixed-material assemblies.
Q：What are the standard surface roughness (Ra) values?
A：For ground finishes, Ra is typically < 0.8 µm, but it varies based on the grit size specified during the ordering process. Surface finish directly impacts both aesthetic appearance and corrosion resistance in exposed environments.
Q：Does this structural tube require heat treatment?
A：Most austenitic grades are solution annealed (Condition +AT) to restore corrosion resistance after the welding process. Heat treatment eliminates residual stresses and optimizes material properties for demanding applications.
Q：What is the 'W2' welding category?
A：W2 indicates that the tube is welded from a cold-rolled strip and the weld seam is further processed, often resulting in a superior surface finish and tighter tolerances than W1. This category is preferred for visible architectural applications.
Q：What non-destructive inspection (NDT) matrix is enforced to validate physical profile parameters?
A：Every production batch undergoes continuous online eddy current tracking, laser-micrometer dimensional scaling, and micro-calibrated profile thickness monitoring to secure complete perimeter uniformity. This ensures your components meet exact specifications.
Q：What robust shipping protection is allocated during long-distance logistics?
A：The tubes are bundled securely with high-tensile steel bands, wrapped entirely inside individual plastic bag sleeves or heavy waterproof weaving bags, and transported on secure wood-supported platforms. This multi-layer protection prevents surface damage during transit.
Contact Us
Ready to source reliable en 10296-2 structural tube for your next project? Contact our engineering team at info@hballtrust.com for technical specifications, competitive quotations, and delivery schedules tailored to your requirements.
