What is S355J2H cold-formed welded steel pipe?
S355J2H is a specific type of cold-formed welded structural steel pipe conforming to the European standard EN 10219. It has a minimum yield strength of 355 MPa and is specifically designed for excellent toughness and impact resistance at low temperatures, guaranteeing a minimum impact strength of 27 J at -20°C.
What engineering projects are S355J2H cold-formed welded steel pipes mainly used in?
S355J2H cold-formed welded steel pipes are used in various engineering projects, including steel structures, civil engineering, and heavy machinery. Its high strength, excellent low-temperature toughness, and good weldability make it an ideal choice for cold regions, demanding structures, and marine engineering applications.
What is the difference between S355J2H cold-formed welded pipe and hot-formed pipe?
The main difference is that cold-formed welded pipe is formed and welded from steel strip at room temperature, while hot-formed pipe is formed at high temperatures. Cold-bent pipes offer better surface finish and dimensional accuracy, while hot-bent pipes typically have thicker walls and, due to their higher forming temperature, better material ductility and toughness.
Can S355J2H cold-bent welded pipes be used in low-temperature environments?
Yes, S355J2H cold-bent welded pipes can be used in low-temperature environments. The "J2" designation guarantees an impact strength of at least 27J at -20℃. With its high strength and excellent low-temperature toughness, this steel pipe is suitable for applications in cold regions.
What are the storage requirements for S355J2H cold-bent welded steel pipes?
The storage requirements for S355J2H cold-bent welded steel pipes are to keep them dry and clean, avoiding rainwater and impurities, and removing rust immediately. After cleaning, high-quality steel pipes should be coated with anti-rust oil before storage, while severely corroded steel pipes should be used as soon as possible. The steel pipes should be stored in bundles, usually secured with steel straps.
