en 10296-2 1.4404 tube
2. Standard: EN 10296-2, European standard for welded circular stainless steel tubes for general structural and mechanical engineering
3. Process: High-precision automated longitudinal straight-seam welding, maximizing line integrity and bending formability
4. Size Range: Metric structural diameters with highly uniform wall gauges tailored for rugged outdoor frameworks
5. Heat Treatment: As-welded state or full-body solution annealed depending on targeted structural application demands
6. Surface Finish: Bright mirror polished (600 Grit), satin hairline brushed, or uniform descaled commercial finish
7. Application: Coastal outdoor railings, marine structural handrails, architectural canopy components, and coastal machine frameworks
8. Service Advantage: Sourced from tier-one steel strips, surface roughness (Ra) certificates provided, and flexible production schedules
9. Packaging: Secure international bundle packing wrapped in waterproof canvas or safely nested in solid plywood crates
10. Key Advantage: Combines supreme atmospheric rust defense in high-salinity marine environments with superb structural cost economy
EN 10296-2 1.4404 Tube – Premium Marine-Grade Structural Solution for Corrosive Industrial Environments
Hebei All Trust Steel Co., Ltd specializes in manufacturing precision en 10296-2 1.4404 tube engineered for demanding structural and mechanical applications in corrosive environments. This is a welded stainless steel tube manufactured to European standard EN 10296-2 in extra-low carbon grade 1.4404 (X2CrNiMo17-12-2 / AISI 316L) for excellent resistance to chloride attack and intergranular corrosion. We have production facilities with a production capacity of more than 15,000 tons per year. The 100% hydraulic testing compliance guaranties dimensional correctness within the D3/T3 and D4/T4 tolerance classes. Automated longitudinal welding and continuous eddy current inspection of each product according to EN ISO 10893-1, guaranteeing the integrity of weld seam for offshore platforms, frames of pharmaceutical equipment and coastal architectural buildings. Manufactured to EN 10204 3.1 Mill Test Certificates and third party inspected by SGS and TÜV our tubes provide increased corrosion protection with molybdenum and excellent cold formability.
Technical Specifications of EN 10296-2 1.4404 Tube
| Parameter | Specification |
|---|---|
| Standard | EN 10296-2 / ASTM A554 / EN 10219 |
| Material Grade | 1.4404 (X2CrNiMo17-12-2 / Type 316L) |
| Manufacturing Process | Automatic Longitudinal Welding / HFW / TIG / Laser Welded |
| Outer Diameter (OD) | 6.0 mm – 2000.0 mm |
| 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 |
| Surface Finish | As-Welded / Brushed / Satin Polish / Mirror Polish (600 Grit) |
| End Type | Plain End / Square Cut / Burr-Free |
| Tensile Strength (Rm) | 500-700 MPa |
| 0.2% Proof Strength | ≥220 MPa |
| Elongation (A) | ≥40% |
| PREN Value | 24-26 (High Pitting Resistance) |
| NDT Testing | Eddy Current / Laser Dimension Inspection / PMI |
| Quality Certificates | EN 10204 3.1 MTC / ISO 9001:2015 / CE Marking |
| Third-Party Inspection | SGS / BV / TÜV / DNV / ABS Accepted |
| Packaging | Plastic Caps / Hexagonal Bundles / Plywood Crates |
Why EN 10296-2 1.4404 Tube Excels in Marine and Industrial Applications
The product incorporates 2.0-2.5% molybdenum content and extra-low carbon chemistry (max 0.03% C) to prevent intergranular corrosion risk in heat-affected zones. This makes it excellent for welded systems when no post-weld heat treatment is required.
Our automated welding technique delivers repeatable bead shape and maintains parent metal ductility. The tube has a Pitting Resistance Equivalent Number (PREN) of 24-26 and offers good resistance to chloride attack in coastal atmospheres and industrial wash-down conditions.
The grade has good passivation properties with 16.5-18.5% chromium and 10.0-13.0% nickel. When pickled and passivated, the chromium oxide layer will be quickly regenerated to provide long-term surface integrity even after manufacturing.
Advantages for Core Manufacturing
Precision Welding Technologies
We use the high frequency longitudinal welding with real time seam tracking technologies. Every manufacturing lot passes 100% eddy current testing to EN ISO 10893-1 requirements to identify subsurface discontinuities that cannot be seen by optical examination.
Dimensional Homogeneity
Laser-guided measuring devices are used to continually check the outer diameter and wall thickness during manufacture. This guaranties your tubes to conform to D3/T3 or D4/T4 tolerance classes based on en 10296-2 1.4404 tube and is essential for CNC machining and automated assembly.
Material Traceability:
Each batch is supplied with EN 10204 3.1 Mill Test Certificates showing heat number, chemical composition, mechanical qualities and test results. Positive Material Identification (PMI) test to validate alloy grade before shipment.
Versatile Surface Finishing Options
You can specify surface treatments based on application requirements:
- Mirror Polish (600 Grit): Ideal for pharmaceutical clean rooms and food processing equipment where bacterial adhesion must be minimized.
- Satin Hairline Brushed: Provides uniform aesthetics for architectural handrails and decorative panels while hiding minor surface scratches.
- Descaled Commercial Finish: Cost-effective option for structural frameworks where appearance is secondary to corrosion resistance.
All finishes undergo surface roughness (Ra) verification to meet engineering specifications.
Industrial Applications Across Multiple Sectors
Marine and Offshore Engineering
Its resistance to salt spray and chloride makes steel well suited for structural railings, mast support frames and fittings on oil rigs. The additional low carbon content reduces sensitisation during welding and preserves corrosion resistance at the welds.
Pharmaceuticals & Biotechnology
Materials used in equipment frames and support structures for cleanrooms must be compatible with harsh Clean-in-Place (CIP) chemicals. The tube meets en 10296-2 1.4404 and can survive repeated use of caustic sanitizers and retain its structural integrity.
Architecture on the Coast
The construction of beachfront projects requires canopy structures, balustrade systems and external cladding frameworks that will withstand atmospheric degradation and look good for decades.
Automotive & Transportation
With resistance to oxidation at high temperatures and resilience to vibration fatigue, the tube is ideal for use in high performance exhaust systems and chassis components in cars operating in coastal locations.
Robust Quality Assurance Process
We have a four step quality control system to guarantee every tube conforms to international standards:
Stage 1 – Raw Material Verification: Spectrographic examination validates the chromium, nickel, molybdenum and carbon content against 1.4404 standards before manufacturing start.
Stage 2 – In-Process Monitoring: Real-time dimensional inspection and weld quality evaluation during automated welding prevents problems from moving through production cycles.
Stage 3 – Destructive Testing: Mechanical characteristics are confirmed by carrying out tensile, flattening and flare expansion tests on representative samples. Stabilisation confirmed by intergranular corrosion test according to EN ISO 3651-2 (Strauss test).
Stage 4 – Final Inspection: Prior to shipping, we visually inspect surface quality, verify packing integrity, and evaluate paperwork. On request, third party witnesses may be arranged from SGS, TÜV or Bureau Veritas.
Flexible Customization Capabilities
We accommodate bespoke engineering requirements through:
- Custom Length Cutting: Precision cutting to your exact specifications eliminates on-site waste and accelerates installation.
- End Preparation: Beveling, threading, or chamfering services prepare tubes for immediate welding or assembly.
- Profile Customization: Beyond circular tubes, we produce square and rectangular structural hollow sections in 1.4404 material.
- Small Batch Orders: Flexible MOQ policies support prototype development and small-scale projects.
Professional Packaging and Global Logistics
Our export packaging protects tubes during international transit:
Each tube is sealed at the end with a plastic cover to keep out moisture. Protective sleeves prevent surface scratching while handling. Waterproof Canvas covered hexagonal bundles connected with steel strapping retain bundle integrity. Individual plywood box nesting offers optimal protection for high-value mirror-polished tubes.
We ship on FOB, CFR, CIF, DDP terms from Shanghai, Ningbo, Tianjin, Qingdao, Shenzhen ports. We save shipping costs by mixing comparable items, such as flanges and fittings, in mixed container loads.
FAQ
Q：Why does this product exhibit superior mechanical and chemical endurance in harsh environments?
A：Sized for structural engineering in coastal grids, it integrates an extra-low carbon profile with heavy molybdenum to provide exceptional defense against localized crevice corrosion and structural fatigue over decades of deployment.
Q：What specific automated welding and finishing technologies ensure the structural safety of this low-carbon line?
A：Fabricated via automatic longitudinal welding from certified steel plate lines under strict structural code oversight, the tube incorporates continuous online eddy current scans and precise digital thickness profiles.
Q：What specialized destructive testing is executed to confirm the material ductility of this structural series?
A：Representative production coupons are subjected to severe mechanical structural flattening trials, cross-sectional flare expansions, tensile load checks, and precise Positive Material Identification (PMI) alloy validation.
Q：Can the dimensional parameters of this low-carbon metric series be customized to fit bespoke architectural layouts?
A：Yes, we support extreme calibration versatility across standard European metric outer diameters, square or rectangular customized structural profiles, and tailored deburred plain cut endings.
Q：What independent third-party inspection certifications are accepted for this low-carbon engineering line?
A：Our advanced structural mills are fully certified under major international frameworks, providing EN 10204 3.1 MTCs and welcoming independent witness audits from SGS, TÜV, and Bureau Veritas (BV).
Contact Us
Ready to source high-integrity en 10296-2 1.4404 tube for your project? Contact our technical team at info@hballtrust.com for quotations, material certifications, and delivery schedules tailored to your requirements.
