EN 10219 S355J2H is a premium cold-formed welded structural hollow section, widely used in construction, infrastructure, and machinery. Available in Circular (CHS), Square (SHS), and Rectangular (RHS) shapes, it combines high strength with excellent low-temperature impact toughness (at -20°C).
The “S355J2H” designation indicates a minimum yield strength of 355 MPa and guaranteed toughness for demanding environments. Its efficient hollow geometry provides superior load-bearing performance while reducing overall weight, making it ideal for columns, beams, and structural frames.
Characteristics and Advantages of S355J2H Hollow Profiles
EN 10219 S355J2H hollow profiles are widely used in structural engineering because they combine high strength, impact toughness, good weldability, dimensional consistency, and efficient cross-sectional design. They suit buildings, bridges, industrial facilities, machinery frames, and other load-bearing structures.
Note: Actual performance depends on size, wall thickness, loading conditions, fabrication method, and design. Always evaluate material properties together with structural requirements.
Key Characteristics at a Glance
| Characteristic | Details | Benefit |
|---|---|---|
| High Structural Strength | Nominal min. yield strength of 355 MPa (applicable thickness range) | Efficient sections, potential steel and weight savings |
| Good Impact Toughness | J2 = specified impact toughness at −20°C | Reduces brittle fracture risk in low temps or sudden loading |
| Good Weldability | Structural carbon steel designed for fabrication and welding | Simplifies complex welded assemblies |
| Efficient Hollow Design | Material distributed around the outer section | Good resistance to bending, compression, and torsion |
| Dimensional Consistency | EN 10219 controls dimensions and tolerances | Improves cutting, welding, drilling, and assembly |
| Flexible Shape & Size | CHS, SHS, and RHS options | Matches loads, space, connections, and appearance |
| Diverse Applications | Frames, columns, beams, bridges, platforms, supports | Broad structural versatility |
| Potential Weight Savings | Efficient load-bearing performance | Easier handling, transport, and installation |
Section Shape Options
| Shape | Best For |
|---|---|
| CHS (Circular) | Multi-directional loading, clean appearance |
| SHS (Square) | Columns and frames |
| RHS (Rectangular) | Beams and members needing flat connection surfaces |
Common Applications
| Application | Typical Use |
|---|---|
| Building frames | Structural skeleton |
| Steel columns & beams | Load-bearing members |
| Bridges | Structural components |
| Industrial platforms | Walkways and support structures |
| Machinery frames | Equipment bases |
| Equipment supports | Mounting and bracing |
| Pipe racks | Supporting piping systems |
| Solar support structures | Mounting frames |
| Architectural structures | Exposed steel elements |
Key Considerations
| Factor | Why It Matters |
|---|---|
| Strength | Must be evaluated with section geometry and structural calculations—not alone |
| Toughness | Important for low-temperature or dynamic loading conditions |
| Weldability | Proper procedures (preheat, heat input, consumables, inspection) are still required |
| Dimensions | Critical for accurate connections and prefabricated assembly |
| Weight Savings | Evaluate against deflection, buckling, connection, and fabrication risks |
Typical Applications of EN 10219 S355J2H Hollow Profiles
EN 10219 S355J2H hollow profiles are widely used in structural engineering for their strength, impact toughness, weldability, and efficient hollow-section geometry. Available as circular (CHS), square (SHS), and rectangular (RHS) sections, they meet diverse structural and fabrication needs.
Applications at a Glance
| Application | Typical Uses | Key Considerations |
|---|---|---|
| Building Steel Structures | Columns, beams, braces, frames, roof structures | Load capacity, connections, weight |
| Bridges & Infrastructure | Pedestrian bridges, support structures, rail facilities | Fatigue, dynamic loading, corrosion, standards |
| Industrial Buildings & Facilities | Equipment frames, pipe racks, platforms, walkways, bracing | Fabrication efficiency, standardized dimensions |
| Machinery & Equipment Frames | Machine frames, supports, protective frames | Vibration, impact, repeated loading |
| Energy & Power Facilities | Equipment supports, platforms, auxiliary structures | Structural calculations, material specs |
| Solar & Renewable Energy | Support frames, equipment supports | Wind, snow, temperature, corrosion, installation |
| Architectural Structures | Canopies, entrances, roof frames, exhibition structures | Appearance, connection simplicity |
| Transportation & Support | Equipment supports, platform frames, barriers | Fatigue, impact, safety standards |
Section Shape Selection
| Shape | Best For |
|---|---|
| CHS (Circular) | Multi-directional loading, clean appearance |
| SHS (Square) | Columns, frames, flat connections |
| RHS (Rectangular) | Beams, members needing flat surfaces |
Why S355J2H Suits These Applications
| Characteristic | Benefit |
|---|---|
| High structural strength | Efficient load-bearing sections |
| Impact toughness at −20°C (J2) | Suitable for low-temperature service |
| Good weldability | Simplifies fabrication and assembly |
| Efficient hollow geometry | Good bending, compression, torsion resistance |
| Dimensional consistency | Accurate connections and prefabrication |
| CHS, SHS, RHS availability | Flexible design options |
| Convenient fabrication | Faster assembly and installation |
EN 10219 S355J2H vs. Other Structural Hollow Sections
EN 10219 S355J2H is a popular structural hollow section for construction, infrastructure, machinery, and industrial projects. But it’s not the only option. Depending on strength, toughness, manufacturing process, temperature, and design requirements, engineers may also consider S355J0H, S235JRH, or EN 10210 hollow sections.
Understanding these differences helps buyers match the profile to actual project requirements—not just price or grade.
Quick Comparison
| Factor | S355J2H | S355J0H | S235JRH |
|---|---|---|---|
| Standard | EN 10219 | EN 10219 | EN 10219 |
| Strength level | S355 | S355 | S235 |
| Relative strength | Higher | Higher | Lower |
| Impact designation | J2 | J0 | JR |
| Impact temperature | −20°C | 0°C | +20°C |
| Typical use | Demanding structural applications | General structural applications | General structural applications |
Key Comparisons
S355J2H vs. S355J0H
| Aspect | S355J2H | S355J0H |
|---|---|---|
| Strength | Similar S355 level | Similar S355 level |
| Impact toughness | −20°C (J2) | 0°C (J0) |
| Best for | Lower service temperatures requiring higher toughness | Milder conditions where J0 is permitted |
Takeaway: Same strength, different toughness. Choose based on design temperature and applicable standards.
S355J2H vs. S235JRH
| Aspect | S355J2H | S235JRH |
|---|---|---|
| Strength | Higher (S355) | Lower (S235) |
| Toughness | J2 (−20°C) | JR (+20°C) |
| Best for | Higher load-bearing capacity, efficient sections | Sufficient strength at lower cost |
EN 10219 vs. EN 10210
| Aspect | EN 10219 | EN 10210 |
|---|---|---|
| Manufacturing | Cold-formed welded | Hot-finished |
| Material designation | S355J2H, etc. | Different designations |
| Dimensional ranges | Per EN 10219 | Per EN 10210 |
| Interchangeable? | Not automatically—check project specs and design requirements |
Takeaway: Manufacturing process differs. Never substitute EN 10219 for EN 10210 without verifying the specification.
CHS vs. SHS vs. RHS
| Shape | Best For |
|---|---|
| CHS (Circular) | Multi-directional loads, appearance |
| SHS (Square) | Columns, frames, welded connections |
| RHS (Rectangular) | Beams, directional strength, connection space |
How to Select the Right Grade
| Choose | When |
|---|---|
| S355J2H | S355 strength + J2 impact toughness required |
| S355J0H | Similar strength, but temperature/toughness fits J0 |
| S235JRH | Lower strength is sufficient; higher performance not needed |
| EN 10210 | Project specifies hot-finished sections—confirm first |
Our EN 10219 S355J2H Hollow Profile Products and Shipping Services
We supply premium EN 10219 S355J2H structural hollow sections in Circular (CHS), Square (SHS), and Rectangular (RHS) shapes. Engineered for construction and infrastructure, these profiles offer high strength and low-temperature toughness.
Choosing the right EN 10219 S355J2H hollow profile means more than picking a steel grade. Profile shape, dimensions, wall thickness, structural loads, service temperature, connections, and fabrication all affect the final choice. A clear spec helps achieve the required performance while controlling costs.
Key Selection Factors
| Factor | What to Confirm |
|---|---|
| Application | Building frames, columns, beams, bridges, machinery, platforms, solar structures |
| Profile Shape | CHS, SHS, or RHS |
| Dimensions | OD/width/height, wall thickness, length, weight per meter |
| Structural Loads | Compression, tension, bending, shear, torsion, wind, snow, dynamic |
| Temperature & Toughness | Service temp vs. J2 impact rating (−20°C) |
| Welding & Fabrication | Cutting, drilling, welding, bending, end prep, attachments |
| Standard & Quality | EN 10219, S355J2H, MTC, testing, third-party inspection |
| Surface Protection | Mill finish, painting, or coating based on environment |
| Logistics | Length, quantity, bundle weight, packaging, shipping |
Step-by-Step Guide
1. Define the Application
| Application | Typical Loading |
|---|---|
| Building columns | Compression |
| Beams | Bending |
| Machinery frames | Vibration, repeated loading |
| Bridges | Dynamic, fatigue |
2. Select the Right Profile Shape
| Shape | Best For |
|---|---|
| CHS (Circular) | Symmetrical loading, clean appearance |
| SHS (Square) | Columns, frames, braces, supports |
| RHS (Rectangular) | Beams, frames, directional strength, connection space |
3. Determine Dimensions
- Key: OD/width/height, wall thickness, length, cross-sectional area, weight per meter
- Wall thickness per load capacity, buckling resistance, and design standards
- Too thick = higher cost; too thin = structural risk
4. Evaluate Structural Loads
- Consider: compression, tension, bending, shear, torsion, wind, snow, dynamic/impact
- Buckling is critical for compression members
- Complete structural calculations before finalizing dimensions
5. Consider Temperature & Impact Toughness
- J2 = specified impact testing at −20°C
- Important for cold environments or impact loading
- Confirm service temperature meets project toughness requirements
6. Check Welding & Fabrication
- Confirm needs: cutting, drilling, welding, bending, end prep, connection plates, brackets
- Welding procedure must suit material grade and thickness
- Fabrication tolerances must match final assembly
7. Confirm Standard & Quality
| Requirement | Purpose |
|---|---|
| EN 10219 + S355J2H | Material compliance |
| Chemical composition report | Grade verification |
| Tensile & impact test results | Mechanical properties |
| Dimensional & weld inspection | Quality control |
| NDE (where applicable) | Defect detection |
| Mill Test Certificate (MTC) | Traceability |
| Third-party inspection | Independent verification |
8. Consider Surface Protection
| Environment | Protection |
|---|---|
| Indoor, low corrosion | Mill finish (if permitted) |
| Outdoor, coastal, industrial | Painting or coating system |
9. Consider Length, Quantity & Shipping
- Confirm: length, quantity, bundle weight, packaging, destination, schedule
- International orders: consider container, bulk, or other transport
- Complete info = accurate quotation, fewer delays
Info to Provide Your Supplier
| Item | Example |
|---|---|
| Standard | EN 10219 |
| Grade | S355J2H |
| Profile type | CHS, SHS, RHS |
| Dimensions | OD / W×H, wall thickness |
| Length | Meters |
| Quantity | Pieces or tons |
| Inspection | MTC, NDE, third-party |
| Surface | Black, painted, coated |
| Destination | Port or site |
Conclusion
EN 10219 S355J2H hollow profiles are highly versatile structural components, offering an excellent combination of high strength, low-temperature toughness (-20°C), and weldability. Available in Circular (CHS), Square (SHS), and Rectangular (RHS) shapes, they are ideal for construction, infrastructure, and industrial applications.
FAQ 1: What is EN 10219 S355J2H hollow profile?
EN 10219 S355J2H is a cold-formed welded structural hollow section made from S355J2H structural steel. It is available in circular (CHS), square (SHS), and rectangular (RHS) profiles.
FAQ 2: What are S355J2H hollow profiles used for?
They are commonly used for building frames, columns, beams, bridges, industrial structures, machinery frames, platforms, equipment supports, and solar structures.
FAQ 3: What does S355J2H mean?
“S355” indicates the structural steel strength grade, “J2” refers to the specified impact toughness requirement at −20°C, and “H” indicates a hollow section.
FAQ 4: What is the difference between S355J2H and S235JRH?
S355J2H generally has a higher strength level and a J2 impact toughness designation, while S235JRH has a lower strength level. The appropriate grade depends on the structural design and service conditions.
FAQ 5: Should I choose CHS, SHS, or RHS?
It depends on the application. CHS offers circular geometry, SHS is suitable for many columns and frames, and RHS is often useful for beams and structures requiring rectangular geometry.
Post time: Sep-10-2026