EN 10219/S235 Welded Steel Pipe Product Overview
EN 10219 S235 Welded Pipes are cold-formed, high-ductility carbon steel tubes ideal for water infrastructure, agricultural irrigation, and lightweight structural frameworks. With sub-grades like S235JRH (1.0036) and S275J2H (1.0143), these pipes deliver 235–510 MPa tensile strength while meeting EN 10219-2 standards for ±0.5% ovality and ISO 9013 weld integrity. Designed as a budget-friendly alternative to seamless EN 10210 pipes, they reduce material costs by 15–20% in non-cyclic load applications.
Key Technical Specifications
1. Dimensional & Manufacturing Properties
- Size Range:
- Round Pipes: 21.3 mm (0.84″) – 820 mm (32.3″) OD | Wall Thickness: 1.65–25 mm
- Square/Rectangular: 20×20 mm – 400×600 mm | Thickness: 1.25–20 mm
- Tolerances:
- OD: ±0.5% (cold-formed), ±1.0% (hot-rolled)
- Weld Reinforcement: ≤10% of wall thickness (EN 10219-1)
- Surface Finishes:
- Galvanized: 80–100 µm zinc coating (EN ISO 1461)
- Epoxy-Coated: 250 µm DFT for corrosive environments
2. Mechanical & Chemical Performance
Chemical Composition:
| Grade | C | Mn | P | S | Impact Test Temp. | Key Trait |
|---|---|---|---|---|---|---|
| S235JRH | ≤0.17% | ≤1.40% | ≤0.040% | ≤0.040% | +20°C | 26% elongation |
| S275J2H | ≤0.20% | ≤1.50% | ≤0.030% | ≤0.030% | -20°C | 23% elongation |
| S355J2H | ≤0.22% | ≤1.60% | ≤0.030% | ≤0.030% | -20°C | 22% elongation |
Mechanical Properties:
| Grade | Yield (MPa) | Tensile (MPa) | Elongation (%) | Charpy V-Notch (J) |
|---|---|---|---|---|
| S235JRH | 235 | 360–510 | ≥26 | ≥27 @ 20°C |
| S275J2H | 275 | 410–560 | ≥23 | ≥27 @ -20°C |
| S355J2H | 355 | 510–680 | ≥22 | ≥27 @ -20°C |
Fatigue Life:
| Grade | Stress Range (MPa) | Cycles to Failure (N) |
|---|---|---|
| S235JRH | 150 | 2.0×10⁶ |
| S355J2H | 220 | 1.5×10⁶ |
Applications by Industry
| Industry | Use Case | Grade | Key Benefit |
|---|---|---|---|
| Water Engineering | Stormwater drainage culverts | S235JRH + Galvanized | 80 µm corrosion resistance |
| Agricultural | Greenhouse support frameworks | S275J2H | 15% weight savings vs. hot-rolled |
| Construction | Modular building columns | S355J2H | 355 MPa yield for seismic zones |
| Petrochemical | Non-critical process pipe supports | S235JRH + Epoxy | 250 µm chemical resistance |
Global Standard Equivalents
| EN 10219 | ASTM | JIS | ISO |
|---|---|---|---|
| S235JRH | A500 Gr.A | STKR 400 | ISO 630 S235JR |
| S355J2H | A501 Gr.50 | STKR 490 | ISO 630 S355J2 |
Certifications & Compliance
- Welding: EN ISO 3834-2 (Quality Requirements)
- Testing: Ultrasonic (EN 10219-1), Hydrostatic (EN 10219-2)
- Certifications: CE Marking (CPR), UKCA, ISO 14001
Packing And Delivery
