Product Overview – S355J2+N Seamless Pipes
S355J2+N Seamless Pipes are high-strength structural steel pipes widely used in construction, offshore platforms, engineering projects, infrastructure developments, marine applications, power plants, and industrial fabrication.
Manufactured from normalized structural steel with a minimum yield strength of 355 MPa, S355J2+N seamless pipes provide an excellent combination of strength, toughness, weldability, and durability. The "J2" designation indicates impact testing at -20°C, while the "+N" condition signifies normalization or normalized rolling, ensuring consistent mechanical properties throughout the material.
For EPC contractors, project consultants, structural engineers, offshore fabricators, and procurement teams, S355J2+N seamless pipes are a preferred solution where strength, safety, and long service life are critical requirements.
Standard & International Identification - S355J2+N Seamless Pipes
Technical Specifications – S355J2+N Seamless Pipes
| Outside Diameter: | 21.3 mm to 660 mm |
| Wall Thickness: | 2 mm to 60 mm |
| Length: | Single Random, Double Random, Cut Length |
| Wall Thickness: | 2 mm to 75 mm |
| End Type: | Plain End, Beveled End, Threaded End |
| Manufacturing: | Hot Finished Seamless |
| Delivery Condition: | Normalized (+N) |
| Impact Test Temperature : | -20°C |
Third Party Inspection Available
All specifications are in accordance of EN 10210 / EN 10216 standards. Mechanical and chemical values are as per standard limits. Mill Test Certificates (MTC) available upon request.
Chemical Composition – S355J2+N
(As per ASTM specification)
| Element | Max (%) |
|---|---|
| Carbon (C): | 0.20% |
| Manganese (Mn): | 1.60% |
| Silicon (Si): | 0.55% |
| Phosphorus (P): | 0.025% |
| Sulfur (S): | 0.025% | Nitrogen (N): | 0.012% |
Note: The controlled chemical composition helps achieve high strength, good toughness, excellent weldability, and reliable performance in structural and engineering applications.
Mechanical Properties – S355J2+N
| Property | Minimum Value |
|---|---|
| Tensile Strength | 470–630 MPa |
| Yield Strength | 355 MPa |
| Elongation | 22% |
| Impact Energy | 27 Joules at -20°C |
Note : mechanical properties make S355J2+N seamless pipes suitable for heavy-duty structural applications where both strength and low-temperature toughness are essential.
Testing & Inspection
Applications of S355J2+N Seamless Pipes
- Where S355J2+N Seamless Pipes are used:
- 🔸Offshore Structural Frameworks
- 🔸Bridge Construction Projects
- 🔸Industrial Buildings
- 🔸Steel Structures
- 🔸Marine Structures
- 🔸Transmission Towers
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