S355JR Straight Seam Welding Pipe
Product Introduction of S355JR Straight Seam Welded Pipe
S355JR straight seam welded pipe is a structural pipe made from S355JR low-alloy high-strength structural steel as specified in European standards EN 10210/10219. It is produced by rolling and welding steel plates or strips along a single line. Its core feature is a parallel longitudinal weld seam, and it is primarily manufactured using two advanced processes: high-frequency resistance welding or submerged arc welding.
Mechanical properties (based on EN standards, thickness ≤ 16mm)
|
Performance Indicators |
Required | value Remarks |
|---|---|---|
| Yield Strength (ReH) | ≥ 355 MPa | With increased thickness, the strength value decreases slightly as specified. |
| Tensile Strength (Rm) | 470 - 630 MPa | |
| Elongation after Fracture (A) | ≥ 22% | |
| Impact Energy (kV, +20°C) | ≥ 27 J |
Applications of S355JR Straight Seam Welded Pipe
S355JR straight seam welded pipe, with its perfect combination of high strength and excellent toughness, is widely used in various harsh engineering environments. It serves as a backbone material for the main steel structures of industrial plants and commercial complexes, and is also a key load-bearing component for the skeleton of engineering machinery, crane booms, and vehicle chassis. Simultaneously, it performs excellently in bridge auxiliary structures, wind turbine towers, port facilities, and even medium- and low-pressure fluid transportation pipelines, providing safe and reliable structural support for modern infrastructure construction.
About us
We are a professional international trading company specializing in steel products. Our core business is integrating resources from high-quality steel mills in China to export high-grade steel products such as S355JR straight seam welded pipes to the global market. We are committed to becoming a reliable bridge connecting Chinese manufacturing with global demand, providing your projects with stable, economical, and internationally compliant steel solutions.
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