Knowledge

• 19/Sep2025

  Does S355J2WP weathering steel have any specific requirements for welding in ...

  S355J2WP weathering steel does have specific requirements for welding in low-temperature environments. These requirements aim to avoid welding defects (e.g., cold cracks, brittle weld zones) and ensur

• 19/Sep2025

  Does S355J2WP weathering steel become brittle in low-temperature environments?

  S355J2WP weathering steel generally does not become brittle in low-temperature environments as it is specified to have good impact toughness at -20°C, meeting the "J2" requirement for low-temperature

• 19/Sep2025

  Can weathering steel be used to make water tanks or water storage containers?

  Weathering steel is feasible for outdoor, non-potable water storage (e.g., rainwater for irrigation) (with optional inner protection), but it is not recommended for drinking water or fully submerged s

• 19/Sep2025

  Does Q295NH rust quickly?

  Q295NH does not rust "quickly" in a destructive sense—it intentionally forms a controlled, protective patina that slows further corrosion. For harsh environments, consider higher-grade weathering stee

• 19/Sep2025

  Quick Guide: ASTM A709 Gr.50 Steel Plate

  A709 Grade 50 steel plate is a high-strength low-alloy structural steel widely applied in bridges, construction, and heavy engineering. With excellent weldability, toughness, and durability, it ensure

• 18/Sep2025

  What are the surface protection treatment methods for weather-resistant produ...

  Common surface protection treatment methods for weather-resistant products mainly involve blocking corrosive media such as moisture, oxygen, and salt spray through "accelerating the formation of natur

• 18/Sep2025

  How to improve the weather resistance of weather-resistant products

  The core of improving the weather resistance of weather-resistant products lies in achieving it through "enhancing their own corrosion resistance", "blocking external corrosive media", or "optimizing

• 18/Sep2025

  Can the mechanical properties of Q355NH be improved through heat treatment?

  The mechanical properties of Q355NH can be improved via heat treatment. Processes like normalizing refine grains and boost toughness, while annealing reduces hardness and relieves stress, though quenc

• 18/Sep2025

  What factors can affect the welding performance of weathering steel?

  The weldability of weathering steel is primarily influenced by its own alloy composition (e.g., Cr, P) and strength grade, as well as the compatibility of welding materials, welding process parameters

• 18/Sep2025

  What are the factors that need to be considered when using S355J2W steel?

  The successful use of S355J2W hinges on aligning its properties with the environment, preserving its ability to form a protective patina during welding/fabrication, and accounting for long-term weathe