Tianjin Lefin Industrial Co., Ltd is one of the most experienced manufacturers and suppliers of en 10210 s355j2h structural steel pipe in China. Please feel free to buy high quality en 10210 s355j2h structural steel pipe from our factory. Good service and reasonable price are available.
EN 10210 is a European standard for hot-finished structural hollow sections (HSS) made from non-alloy and fine-grain steels. S355J2H is a specific grade within this standard, commonly used in welded structural steel pipes.It features a minimum yield strength of 355 MPa for wall thicknesses up to 16 mm and offers excellent toughness at low temperatures, capable of withstanding impacts down to -20°C.This makes it a versatile choice for a wide range of applications in construction and engineering industries.
- Material Grade: S355J2H
- S355: Minimum yield strength of 355 MPa (at ≤16mm thickness).
- J2: Indicates impact toughness at -20°C (Charpy V-notch test).
- H: Denotes hollow sections (hot-finished).
Manufacturing Process
- ERW (Electric Resistance Welding):
This process uses resistive heat and pressure to bond materials. It is efficient, suitable for mass production, and works well across various thicknesses and materials. - SAW (Submerged Arc Welding):
This process involves an arc formed beneath a layer of granular flux, resulting in deeper penetration and superior weld quality. It is particularly effective for thicker sections.
Chemical Composition of S355J2H (Typical values, wt.%)
|
Element |
C (Max) |
Si (Max) |
Mn (Max) |
P (Max) |
S (Max) |
N (Max) |
|
S355J2H |
0.22 |
0.55 |
1.60 |
0.030 |
0.030 |
0.012 |
Note: The exact values may vary depending on the thickness and heat treatment conditions.
Mechanical Properties of EN 10210 S355J2H
|
Property |
Value |
|
Yield Strength (≤ 16 mm) |
≥ 355 MPa |
|
Tensile Strength |
470 – 630 MPa |
|
Elongation (L0 = 5.65√S0) |
≥ 22% |
|
Impact Toughness (at -20°C) |
≥ 27 J (for J2 designation) |
The "J2" in S355J2H indicates compliance with Charpy V-notch impact testing at -20°C.
Applications
Due to its combination of high strength, good weldability, and excellent low-temperature performance, EN 10210 S355J2H is widely used in various industrial sectors, including:
- Construction and Infrastructure: Ideal for use in bridges, buildings, towers, trusses, subway systems, and roof or wall structures.
- Piping Systems: Suitable for conveying fluids under pressure, especially in systems requiring both strength and durability.
- Marine and Offshore Engineering: Used in shipbuilding, offshore platforms, and marine structural components.
- Energy Industry: Commonly used in wind power installations, oil rigs, and transmission pipelines.
- Pressure Vessels: Applied in the manufacturing of pressure-bearing equipment under defined heat treatment and welding standards.
- Mining and Quarrying: Employed in structural components for mines, including conveyor frames and ore handling systems.
Advantages
High strength-to-weight ratio
Good weldability & machinability
Suitable for cold forming
Impact-resistant at low temperatures
Standards & Equivalent Grades
EN 10210-1: Technical delivery conditions
EN 10210-2: Dimensions & tolerances
Equivalent to: ASTM A500 Gr.C (similar properties but different testing standards)
Conclusion
EN 10210 S355J2H ERW pipes are widely used in European structural applications due to their balance of strength, toughness, and cost-effectiveness. They are ideal for welded constructions where moderate low-temperature performance is required.
Hot Tags: en 10210 s355j2h structural steel pipe, China, suppliers, manufacturers, factory, price, S355NH Structural Hollow Section Square Tube, EN10210 S355JR SQUARE TUBE, EN10210 S355JR CORBON STEEL TUBE, Rectangle Pipe, SHS RHS Steel S355J0H S355J2H, EN10210 S355JR STEEL HOLLOW SECTION
