Tianjin Brisk Steel is one of the manufacturers of S355J2H Low Temperature Rectangular Tube in China. Our products are mainly exported to the Middle East, Southeast Asia, Europe, New Zealand, and other regions.If you would like to learn more about our products, feel free to contact us and send your purchase list.
What is S355J2H? Understanding the Standard?
The alphanumeric code S355J2H isn't just a label; it is a guarantee of European standard (EN 10210-1 / EN 10219-1) compliance:
S: Structural steel.
355: Minimum yield strength of $355\text{ MPa}$ for optimal load-bearing capacity.
J2: Guaranteed impact test energy of 27 Joules at -20°C, ensuring excellent low-temperature toughness.
H: Hollow section.
Key Features & Benefits
1. Superior Sub-Zero Impact Toughness
The standout feature of S355J2H is its ability to resist brittle fracture in freezing environments. By maintaining a minimum impact energy of 27J at -20°C, these tubes are ideal for arctic regions, high-altitude installations, and refrigerated environments.
2. High Strength-to-Weight Ratio
The rectangular geometry offers excellent torsional rigidity and bending resistance. This allows engineers to design lighter structures without sacrificing safety, leading to reduced material costs and easier transportation.
3. Excellent Weldability and Formability
With a strictly controlled Carbon Equivalent Value (CEV), our S355J2H rectangular tubes offer exceptional weldability. They can be easily welded using standard fabrication methods without the high risk of cold cracking.
4. Dimensional Precision
Manufactured using advanced hot-finished or cold-formed processes, our tubes feature uniform wall thickness, tight tolerances, and straightness that meet strict international tolerances.
Technical Specifications
To help you select the exact fit for your project, here is an overview of our standard product range:
| Property | Specification / Values |
| Standard | EN 10210 / EN 10219 |
| Size Range | 20mm x 40mm to 400mm x 600mm (Custom sizes available) |
| Wall Thickness | 2.0mm – 20.0mm |
| Length | 5.8m, 6m, 11.8m, 12m, or customized lengths |
| Surface Finish | Bare, Lightly Oiled, Anti-corrosion Painting, Hot-Dip Galvanized |
| End Execution | Square Cut, Burr Removed |
Quality Assurance & International Certification
We understand that safety is paramount in facade engineering. Every single batch of our high-strength rectangular tubes undergoes rigorous quality control testing before leaving our facility:
Ultrasonic Testing (UT) for internal flaw detection
Tensile & Yield Strength Testing to verify load capacities
Charpy V-Notch Impact Testing for low-temperature performance
Full Mill Test Certificates (MTC) provided in accordance with EN 10204 3.1 or 3.2
Chemical Composition (Max %)
C: 0.22%
Si: 0.55%
Mn: 1.60%
P: 0.030%
S: 0.030%
Target Applications
Our S355J2H low-temperature rectangular tubes are widely utilized across demanding global industries:
Oil & Gas Infrastructure: Offshore platforms, arctic pipelines, and structural supports in extreme climates.
Heavy Machinery & Equipment: Cranes, excavators, and agricultural equipment operating in low temperatures.
Bridge & Civil Engineering: Structural columns, trusses, and pedestrian bridges.
Renewable Energy: Structural frameworks for wind turbines and solar tracking systems in cold regions.
Frequently Asked Questions (FAQs)
FAQ
Q: What is the main difference between S355JR and S355J2H?
A: The primary difference lies in their impact testing temperatures. S355JR is tested for impact toughness at room temperature (+20°C), whereas S355J2H is tested at -20°C. The "H" also explicitly denotes a hollow section. If your project faces winter conditions or freezing temperatures, S355J2H is required to prevent catastrophic brittle failure.
Q: Can S355J2H rectangular tubes be hot-dip galvanized?
A: Yes, absolutely. Our S355J2H tubes feature controlled silicon and phosphorus content, making them highly suitable for hot-dip galvanizing. This adds an extra layer of robust atmospheric corrosion protection, perfect for coastal or highly humid environments.
Q: Do you offer custom sizes and lengths?
A: Yes. While we keep a massive inventory of standard European sizes ready for immediate shipment, we can customize dimensions, wall thicknesses, and specific cut-to-length requirements to minimize on-site waste for your project.
Q: How do you pack the tubes for international ocean freight?
A: We prioritize secure packaging to prevent transit damage. Typically, tubes are packed in hexagonal bundles secured with steel strips, fitted with lifting slings for easy unloading, and wrapped in waterproof PVC woven sheets to prevent rust during sea voyage.
Contact Us
If you are interested in our S355J2H Low Temperature Rectangular Tube, please contact us with your specific requirements (specifications, quantity, material, surface treatment, etc.), and we will provide you with a detailed quotation and product sample as soon as possible. We look forward to establishing long-term cooperative relationships with you!!
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