Product Overview – ST52-2 Seamless Pipes
ST52-2 Seamless Pipes are premium-quality carbon steel seamless pipes manufactured for applications requiring high strength, excellent toughness, superior machinability, and outstanding dimensional accuracy.
Produced according to German DIN standards, ST52-2 is widely recognized as one of the most reliable structural carbon steel grades used across industrial sectors.
These seamless pipes are extensively used in systems, heavy engineering, oil & gas, construction, automotive manufacturing, offshore structures, machinery, power plants, and industrial fabrication. Their seamless construction eliminates weld joints, providing higher pressure resistance and improved structural integrity compared to welded pipes.
Engineers and procurement teams prefer ST52-2 seamless pipes because they offer excellent weldability, high load-bearing capacity, and reliable performance under dynamic loads and demanding working conditions.
Standard & International Identification - S355J2+N Seamless Pipes
Technical Specifications – S355J2+N Seamless Pipes
| Outside Diameter: | 6 mm to 660 mm |
| Wall Thickness: | 1 mm to 60 mm |
| Manufacturing: | Hot Finished / Cold Drawn |
| Pipe Form: | Round |
| Length: | Single Random, Double Random, Cut Length |
| Wall Thickness: | 2 mm to 75 mm |
| End Type: | Plain End, Beveled End, Threaded End |
| Surface Finish: | Black, Pickled, Oiled, Bright Finish |
Third Party Inspection Available
All specifications are in accordance of DIN 2391 / DIN 17121. Mechanical and chemical values are as per standard limits. Mill Test Certificates (MTC) available upon request.
Chemical Composition – ST52-2
(As per ASTM specification)
| Element | Max (%) |
|---|---|
| Carbon (C): | 0.22% |
| Manganese (Mn): | 1.60% |
| Silicon (Si): | 0.55% |
| Phosphorus (P): | 0.045% |
| Sulfur (S): | 0.045% |
Note: The balanced chemical composition of ST52-2 provides excellent strength, good weldability, improved toughness, and outstanding fabrication characteristics for demanding engineering and industrial applications.
Mechanical Properties – ST52-2
| Property | Minimum Value |
|---|---|
| Tensile Strength | 490–630 MPa |
| Yield Strength | 355 MPa |
| Elongation | 20% |
| Hardness | Approx. 146 HB |
Note :ST52-2 seamless pipes offer an excellent balance of strength, toughness, and ductility, making them ideal for hydraulic cylinders, engineering components, structural applications, and pressure systems.
Testing & Inspection
Applications of ST52-2 Seamless Pipes
- Where ST52-2 Seamless Pipes are used:
- 🔸Hydraulic Cylinder Tubes
- 🔸Hydraulic Power Packs
- 🔸Oil & Gas Pipelines
- 🔸Pressure Piping Systems
- 🔸Structural Engineering
- 🔸Industrial Machinery
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