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S355JR and S355J2H Round Seamless Steel Tubes for Structural Applications
1. Product Description:
S355JR and S355J2H Round Seamless Steel Tubes are engineered for structural applications that require high strength and ductility. These tubes are manufactured from low alloy steel and are seamless, ensuring uniform wall thickness and superior structural integrity. The S355 designation indicates the minimum yield strength of 355 MPa, while the JR and J2H grades denote varying levels of impact resistance.
2. Product Features:
Seamless Construction: Provides consistent wall thickness and enhanced resistance to pressure.
High Yield Strength: Offers a minimum yield strength of 355 MPa for robust structural support.
Impact Resistance: J2H grade has enhanced impact resistance for use in colder environments.
Weldability: Suitable for welding, facilitating easy integration into structural frameworks.
Corrosion Resistance: Offers resistance to atmospheric corrosion for extended service life.
3. Product Parameters:
Parameter
Description
Standards
EN 10210-2 (for seamless tubes)
Material
Low Alloy Steel (Seamless)
Grades
S355JR, S355J2H
Shape
Round
Size Range
Various diameters and wall thicknesses as per EN 10210-2
Length
Standard lengths, customizable upon request
Ends
Plain ends, beveled ends, threaded, or socket-weld ends
Surface Treatment
As-rolled, annealed, or normalized
4. Mechanical Properties:
Property
S355JR Requirements
S355J2H Requirements
Tensile Strength
≥440 MPa
≥440 MPa
Yield Strength
≥235 MPa
≥235 MPa
Elongation
≥21%
≥21%
Impact Energy
Varies by grade
Enhanced for J2H
5. Chemical Composition:
Element
Typical Range (%)
Carbon
0.16 - 0.24
Manganese
1.00 - 1.70
Phosphorus
≤0.025
Sulfur
≤0.025
Silicon
≤0.50
6. Product Applications:
Structural Framing: Used in building and construction for structural framing.
Mechanical Equipment: Ideal for manufacturing equipment that requires a strong and stable framework.
Piping Systems: Suitable for use in industrial piping systems for various fluids.
Infrastructure Projects: Employed in bridges, highways, and other large-scale infrastructure projects.
Cangzhou Baoyang Pipeline Equipment Co., Ltd. is located in Hope New District, Mengcun County, Hebei Province, China's pipeline equipment base. The company was founded in 2018 with a registered capital of 10 million yuan. It is an enterprise integrating steel pipe spot warehousing,... Cangzhou Baoyang Pipeline Equipment Co., Ltd. is located in Hope New District, Mengcun County, Hebei Province, China's pipeline equipment base. The company was founded in 2018 with a registered capital of 10 million yuan. It is an enterprise integrating steel pipe spot warehousing,...