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Help CenterEN 10025-2 Hot Rolled Non-Alloy Structural Steel Tube For Structural and General Engineering Applications – Grades S235, S275, S355
Product Spotlights
For Structural and General Engineering Applications – Grades S235, S275, S355
Current Edition: 2019 – Quality Grades JR, J0, J2, K2
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EN 10025-2 Hot Rolled Non-Alloy Structural Steel Tube
For Structural and General Engineering Applications – Grades S235, S275, S355
Current Edition: 2019 – Quality Grades JR, J0, J2, K2
Product Overview
EN 10025-2 is the European standard for hot rolled products of non-alloy structural steels. This standard specifies the technical delivery conditions for flat and long products, including hot rolled steel tubes used in structural and general engineering applications.
NOTE: EN 10025-2 does NOT apply to structural hollow sections (EN 10210-1, EN 10219-1) and pressure tubes – this standard covers solid-wall tubes produced from steel plates or strips .
Steel Grades Covered:
S235 (JR, J0, J2) – General structural steel, most economical
S275 (JR, J0, J2) – Higher strength, standard construction
S355 (JR, J0, J2, K2) – High strength structural steel, most popular
Quality Grades (Impact Properties):
JR – Charpy impact tested at 20°C (room temperature)
J0 – Charpy impact tested at 0°C
J2 – Charpy impact tested at -20°C
K2 – Charpy impact tested at -20°C with higher energy requirement
✅ EN 10025-2:2019 certified – Current European standard (supersedes 2004 edition)
✅ CE Marking available – Compliant with Construction Products Regulation (CPR)
✅ Hot rolled process – Cost-effective production for large quantities
✅ Wide size range – OD up to 508mm, WT up to 60mm
✅ Good weldability – Suitable for all standard welding processes
✅ Multiple quality grades – JR, J0, J2, K2 – match to service temperature
✅ Full traceability – EN 10204 Type 3.1 MTC provided
✅ Factory direct | Stock available | Fast delivery
Key Specifications
| Parameter | Details |
|---|---|
| Standard | EN 10025-2:2019 (current edition – supersedes EN 10025-2:2004) |
| Product Type | Hot Rolled Non-Alloy Structural Steel Tube |
| Steel Grades | S235, S275, S355 (most popular) |
| Quality Grades | JR, J0, J2, K2 (impact properties) |
| OD Range | 21.3mm – 508mm (hot rolled) |
| Wall Thickness | 2.0mm – 60mm |
| Length | 4m – 12m (fixed or random) |
| Delivery Condition | +AR (as-rolled), +N (normalized) |
| Surface Finish | Black / Bare / Oiled |
| End Finish | Plain / Beveled |
| Thickness Limits | Flat/long products ≤250mm for hot-rolled structural steels |
Steel Grade Overview
| Grade | Yield Strength (MPa) | Tensile (MPa) | Quality Grades | Typical Application |
|---|---|---|---|---|
| S235 | ≥235 | 360-510 | JR, J0, J2 | Light structural, general engineering |
| S275 | ≥275 | 410-560 | JR, J0, J2 | Standard construction |
| S355 | ≥355 | 470-630 | JR, J0, J2, K2 | Heavy structural – most popular |
💡 S355 is the most commonly specified grade for heavy structural applications – providing excellent strength-to-weight ratio .
📌 The numbering in the steel grade name corresponds to the minimum yield strength in MPa at 16mm thickness. Example: S235 = minimum yield 235 N/mm² .
Quality Grades – Impact Properties
| Quality Grade | Charpy Impact Test Temp | Min Absorbed Energy (J) | Application |
|---|---|---|---|
| JR | +20°C (room temperature) | 27J | Indoor applications, mild climates |
| J0 | 0°C | 27J | Cold climate, outdoor structures |
| J2 | -20°C | 27J | Arctic/cold environments – most common for cold climates |
| K2 | -20°C | 40J | Critical low temperature applications |
💡 Choose J2 or K2 for outdoor structural applications in regions with sub-zero winter temperatures.
Chemical Composition – EN 10025-2 Grades
| Grade | C max | Si max | Mn max | P max | S max | Cu max | N max |
|---|---|---|---|---|---|---|---|
| S235JR | 0.17 | — | 1.40 | 0.035 | 0.035 | 0.55 | 0.012 |
| S235J0 | 0.17 | — | 1.40 | 0.030 | 0.030 | 0.55 | 0.012 |
| S235J2 | 0.17 | — | 1.40 | 0.025 | 0.025 | 0.55 | — |
| S275JR | 0.21 | — | 1.50 | 0.035 | 0.035 | 0.55 | 0.012 |
| S275J0 | 0.21 | — | 1.50 | 0.030 | 0.030 | 0.55 | 0.012 |
| S275J2 | 0.21 | — | 1.50 | 0.025 | 0.025 | 0.55 | — |
| S355JR | 0.24 | 0.55 | 1.60 | 0.035 | 0.035 | 0.55 | 0.012 |
| S355J0 | 0.24 | 0.55 | 1.60 | 0.030 | 0.030 | 0.55 | 0.012 |
| S355J2 | 0.24 | 0.55 | 1.60 | 0.025 | 0.025 | 0.55 | — |
| S355K2 | 0.24 | 0.55 | 1.60 | 0.025 | 0.025 | 0.55 | — |
💡 Lower carbon equivalent (CEV) ensures excellent weldability without preheating for thinner sections.
Mechanical Properties – EN 10025-2 Grades
| Grade | Yield Strength min (MPa) | Tensile Strength (MPa) | Elongation min (%) | ||
|---|---|---|---|---|---|
| ≤16mm | 16-40mm | 40-100mm | |||
| S235 | 235 | 225 | 215 | 360-510 | 26 |
| S275 | 275 | 265 | 255 | 410-560 | 23 |
| S355 | 355 | 345 | 335 | 470-630 | 22 |
💡 Yield strength decreases with increasing thickness – important for thick-wall tube design .
Key Advantages – EN 10025-2 Structural Steel Tubes
| Feature | Benefit |
|---|---|
| Hot rolled process | Cost-effective production for large quantities |
| Non-alloy steel | Lower cost than alloy steels |
| Good weldability | Suitable for MIG, TIG, arc welding – no preheat for thin sections |
| Excellent machinability | Easy to cut, drill, and weld |
| Multiple quality grades | JR (indoor), J0 (0°C), J2 (-20°C), K2 (cold climate) |
| CE marking available | Compliant with Construction Products Regulation (CPR) |
| Wide size range | OD up to 508mm, WT up to 60mm |
| S355 high strength | Reduced weight for same load capacity |
| Full traceability | EN 10204 3.1 MTC with heat number |
Applications – EN 10025-2 Hot Rolled Steel Tubes
| Industry | Application | Recommended Grade | Quality Grade |
|---|---|---|---|
| Construction | Building frames, columns, beams | S355 | J2 |
| Bridges | Structural support tubes | S355 | K2 |
| Industrial Machinery | Equipment frames, supports | S275, S355 | JR, J0 |
| Cranes | Structural members | S355 | J0, J2 |
| Shipbuilding | Hull structures | S355 | J2 |
| Offshore Platforms | Structural piping | S355 | K2 |
| Stadiums | Roof structures | S355 | J0, J2 |
| Wind Towers | Tower structures | S355 | J2 |
| General Engineering | Brackets, supports, frames | S235, S275 | JR |
| Transportation | Roll cages, chassis | S355 | J0, J2 |
Available Sizes – Hot Rolled Structural Tubes
| OD (mm) | WT (mm) | Typical Grade | Application |
|---|---|---|---|
| 21.3 | 2.0 – 5.0 | S235, S355 | Small structural |
| 26.9 | 2.0 – 6.0 | S235, S355 | Small structural |
| 33.7 | 2.5 – 6.0 | S235, S275, S355 | Light frames |
| 42.4 | 2.5 – 8.0 | S235, S275, S355 | General construction |
| 48.3 | 3.0 – 10.0 | S235, S275, S355 | Structural supports |
| 60.3 | 3.0 – 12.0 | S275, S355 | Heavy structural |
| 76.1 | 3.5 – 14.0 | S355 | Heavy structural |
| 88.9 | 4.0 – 16.0 | S355 | Heavy structural |
| 101.6 | 4.0 – 20.0 | S355 | Columns, heavy frames |
| 114.3 | 4.0 – 25.0 | S355 | Main structural members |
| 141.3 | 5.0 – 30.0 | S355 | Large structures |
| 168.3 | 5.0 – 35.0 | S355 | Bridge trusses |
| 219.1 | 6.0 – 40.0 | S355 | Offshore structures |
| 273.1 | 6.0 – 45.0 | S355 | Heavy columns |
| 323.9 | 8.0 – 50.0 | S355 | Wind towers |
| 355.6 | 8.0 – 55.0 | S355 | Large diameter columns |
| 406.4 | 10.0 – 60.0 | S355 | Heavy structural |
| 457.2 | 10.0 – 60.0 | S355 | Special applications |
| 508.0 | 10.0 – 60.0 | S355 | Special applications |
💡 Most popular sizes: 60.3mm, 76.1mm, 88.9mm, 114.3mm, 168.3mm OD – S355 grade with J2 quality for outdoor structures.
Quality Grade Selection Guide
| Service Environment | Minimum Operating Temp | Recommended Quality Grade | Charpy Test Temp |
|---|---|---|---|
| Indoor / Mild climate | >20°C | JR | +20°C |
| Cold climate | 0°C to 20°C | J0 | 0°C |
| Arctic / Outdoor | -20°C to 0°C | J2 | -20°C |
| Critical low temperature | K2 | -20°C (40J min) |
💡 For outdoor construction in regions with freezing temperatures, specify J2 quality to guarantee impact toughness at -20°C .
Delivery Conditions – EN 10025-2
| Symbol | Description | Applicability |
|---|---|---|
| +AR | As-rolled (no heat treatment) | Standard condition for most hot rolled products |
| +N | Normalized | For products requiring improved toughness |
| +M | Thermomechanically rolled | For high strength applications |
📌 The steels specified in EN 10025-2 are not intended to be heat treated except products delivered in +N condition. Stress relieving is accepted .
📌 Products delivered in +N condition can be hot formed and/or normalized after delivery .
Dimensional Tolerances
Outer Diameter Tolerances:
| OD Range (mm) | Tolerance (mm) |
|---|---|
| ≤ 50 | ±0.5 mm |
| > 50 | ±1.0% |
Wall Thickness Tolerances:
| WT Range (mm) | Tolerance |
|---|---|
| ≤ 4 | ±0.3 mm |
| > 4 | ±10% |
Pressure / Load vs EN 10216 / EN 10305 – Important Note
| Standard | Primary Purpose | Key Characteristics |
|---|---|---|
| EN 10025-2 | Structural applications | Hot rolled, wide size range, cost-effective, excellent weldability, defined by yield strength |
| EN 10216-2 | Pressure purposes (elevated temp) | Seamless, tighter tolerances, pressure tested |
| EN 10305-1 | Precision applications (cold drawn) | Cold drawn, high dimensional accuracy, bright surface |
💡 Choose EN 10025-2 for structural applications (frames, cranes, supports). For pressure vessels or boilers, select EN 10216-2 . For precision hydraulic cylinders, select EN 10305-1.
Quality Testing & Inspection – EN 10025-2
| Test | Method | Coverage | Applicability |
|---|---|---|---|
| Tensile Test | EN ISO 6892-1 | Per lot | All grades |
| Charpy Impact Test | EN ISO 148-1 | Per lot | J0, J2, K2 grades only |
| Chemical Analysis | EN 10025-2 | Per heat | All grades |
| Dimensional Inspection | Calipers, tape | 100% | All products |
| Visual Examination | Direct | 100% | All products |
| Ultrasonic (UT) | EN 10160 | Optional/by agreement | Large diameter tubes |
| Hydrostatic Test | EN 10025-2 | Optional/by agreement | When specified |
📌 EN 10025-2 is a harmonized standard under the Construction Products Regulation (CPR) – products may be CE marked .
CE Marking – Construction Products Regulation (CPR)
| Requirement | Details |
|---|---|
| Harmonized standard | EN 10025-2 is harmonized under CPR |
| CE marking | Available for structural applications |
| DoP (Declaration of Performance) | Available upon request |
| AVCP (Assessment/Verification) | System 2+ for structural components |
Mill Test Certificate – EN 10025-2
EN 10204 Type 3.1 MTC – Provided with heat number
EN 10204 Type 3.2 – Available upon request (third-party: SGS, BV, TUV)
CE Declaration of Performance (DoP) – Available for CPR compliance
Traceability: Full traceability from melt to finished tube
Test report includes: Heat analysis, tensile results, impact results (for J0/J2/K2 grades)
Processing Services
| Service | Description |
|---|---|
| Cutting | Precision cutting to exact length – mechanical or plasma |
| Beveling | For welding preparation (30°-37.5°) |
| Bending | Cold or hot bending |
| Drilling | Bolt holes, pipe supports |
| Surface treatment | Oiling, painting, galvanizing |
| End finishing | Plain or beveled |
Packaging & Shipping
| Item | Details |
|---|---|
| Packaging | Hexagonal bundles or steel crates |
| Protection | Anti-rust oil + plastic end caps |
| Marking | Stencil/spray with Grade, size, heat number, EN 10025-2 |
| Documentation | MTC + test reports (DoP if required) |
| Lead time | 7-15 days (stock grades: S235JR, S355J2), 20-30 days (custom) |
| Port | Tianjin / Shanghai / Guangzhou |
Why Choose Our EN 10025-2 Structural Steel Tubes?
| Advantage | Description |
|---|---|
| Current standard | EN 10025-2:2019 – fully compliant with latest edition |
| CE marking available | Compliant with Construction Products Regulation (CPR) |
| Full grade range | S235, S275, S355 – one-stop sourcing |
| All quality grades | JR, J0, J2, K2 – match to service temperature |
| S355J2 in stock | Most popular high-strength structural grade – ready to ship |
| Hot rolled specialist | Cost-effective production for structural applications |
| Good weldability | Low CEV – suitable for all standard welding processes |
| Full traceability | EN 10204 3.1 MTC with heat number |
| CE marking support | DoP provided for CPR compliance |
| Global export | Shipped to construction projects worldwide |
Contact for Quote – EN 10025-2 Structural Tubes
Please provide the following details:
Grade : S235 / S275 / S355
Quality Grade : JR / J0 / J2 / K2
OD (mm) : _______
WT (mm) : _______
Length (m) : _______
Quantity : _______ (pieces / meters / tons)
Application : Construction / Machinery / Bridge / Offshore / Other _______
CE marking required? : Yes / No
Inspection : Standard / Third-party (SGS/BV/TUV)
📧 Email: yjhtrade@gmail.com
📞 WhatsApp: +86 15106174543
🌐 Website:
Reply within 24 hours.
FAQ – EN 10025-2 Structural Steel Tubes
Q1: What is EN 10025-2 used for?
A: EN 10025-2 structural steel tubes are used in construction, bridges, cranes, industrial machinery, offshore platforms, and general engineering applications requiring hot rolled non-alloy steel .
Q2: What is the difference between EN 10025-2 and EN 10216-2?
A: EN 10025-2 is for structural applications (construction, machinery) with focus on yield strength and weldability. EN 10216-2 is for pressure purposes (boilers, pressure vessels) with specified elevated temperature properties. EN 10025-2 is not intended for pressure equipment .
Q3: What does J0 and J2 mean in steel grades?
A: JR – impact tested at +20°C (room temperature). J0 – impact tested at 0°C. J2 – impact tested at -20°C. K2 – impact tested at -20°C with higher energy (40J). Use J2 or K2 for outdoor cold climate applications .
Q4: What is the most popular grade in EN 10025-2?
A: S355J2 – high strength (355 MPa yield) with impact toughness at -20°C – widely used for outdoor construction, bridges, and offshore structures .
Q5: Can EN 10025-2 tubes be welded?
A: Yes – excellent weldability. S235 and S275 can be welded without preheat. S355 may require preheat for thick sections depending on welding procedure .
Q6: What is the difference between S355JR, S355J0, and S355J2?
A: The suffixes indicate Charpy impact test temperature: JR – +20°C (indoor), J0 – 0°C (cold climate), J2 – -20°C (arctic/outdoor). Same mechanical properties, different low temperature toughness .
Q7: What is the maximum thickness for EN 10025-2?
A: Up to 250mm for flat and long products of all grades and qualities; up to 400mm for flat products of J2 and K2 qualities .
Q8: Is CE marking available for EN 10025-2 products?
A: Yes – EN 10025-2 is a harmonized standard under the Construction Products Regulation (CPR). CE marking and Declaration of Performance (DoP) are available .
Q9: What is the difference between S355 and S235?
A: S355 has higher yield strength (355 MPa vs 235 MPa) – allows thinner sections for same load, reducing weight and cost for heavy structures .
Q10: Do you provide third-party inspection?
A: Yes. SGS, BV, TUV, or any customer-specified agency.
Q11: Do you offer free samples?
A: 30cm sample available for common grades. Shipping fee applies.
Related Products – EN 10025 Series
| Standard | Product Type | Application |
|---|---|---|
| EN 10025-2 | Hot rolled non-alloy structural steel | Structural construction (this product) |
| EN 10025-3 | Normalized/normalized rolled fine grain steels | Higher toughness |
| EN 10025-4 | Thermomechanically rolled fine grain steels | High strength structural |
| EN 10025-5 | Weathering steels (COR-TEN) | Atmospheric corrosion resistance |
| EN 10025-6 | High yield strength flat products | Ultra-high strength (S460, S500, S620, S690, S890, S960) |
Tags: EN 10025-2 Structural Steel Tube Hot Rolled Tube S355 S355J2 S235 S275 Construction Steel CPR Non-Alloy Steel
Quick Reference – EN 10025-2 Grade Selection
| Grade | Yield (MPa) | Typical Application | Recommended Quality Grade |
|---|---|---|---|
| S235 | ≥235 | Light structures, general engineering | JR (indoor), J0 (outdoor) |
| S275 | ≥275 | Standard construction, machinery | JR, J0 |
| S355 | ≥355 | Heavy structures, bridges, cranes, offshore | J2 or K2 for outdoor |
Impact Test Temperature Summary
| Suffix | Test Temperature | Minimum Energy |
|---|---|---|
| JR | +20°C (room temperature) | 27J |
| J0 | 0°C | 27J |
| J2 | -20°C | 27J |
| K2 | -20°C | 40J |
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