Knowledge

• 11/Sep2025

  ASME SA789 S32205 duplex stainless steel seamless pipe

  ASME SA789 S32205 duplex stainless steel seamless pipe is a high-strength, corrosion-resistant material with a duplex microstructure suitable for demanding applications in the oil and gas, chemical, a

• 14/Oct2025

  In what specific applications is Q355NH more suitable than mild steel?

  Q355NH is the preferred choice whenever a project demands "strength to bear loads" + "durability to resist weather/corrosion"—applications where mild steel’s low performance would lead to safety risks

• 14/Oct2025

  Is q355nh stronger than mild steel?

  Q355NH is clearly stronger than mild steel—its yield strength is ~50% higher, and tensile strength is ~20–30% higher. This makes Q355NH the go-to choice for structural projects needing high load-beari

• 14/Oct2025

  Does corten steel SPA-H need maintenance?

  SPA-H’s maintenance is not "high-effort" but essential for long-term performance. For structural use, maintenance ensures it avoids premature pitting or strength loss; for decorative use, it preserves

• 14/Oct2025

  What measures can be taken to prevent Q235NH steel plates from rusting?

  To prevent Q235NH steel plates from rusting, measures should be tailored to its "inherent weather resistance" and actual usage scenarios (e.g., outdoor long-term use, indoor storage, transportation).

• 14/Oct2025

  What are the common anti-rust treatment processes for Q235NH steel plates?

  As a weathering steel, Q235NH’s rust prevention treatments should combine its "inherent weather resistance" with "application requirements". Common processes fall into three main categories: enhancing

• 14/Oct2025

  How to deal with rust on the cut surface of Q355NH plate after cutting?

  The key to dealing with rust on Q355NH cut surfaces is to "remove rust thoroughly + match anti-rust treatment to the scenario + prevent re-rusting". For outdoor long-term use, weather-resistant coatin

• 14/Oct2025

  How does Q235NH perform in high-temperature and high-humidity environments?

  Q235NH performs adequately in low-to-medium high-temperature (≤ 300°C) and high-humidity environments (better than ordinary carbon steel) but is not suitable for high temperatures (> 400°C) or environ

• 13/Oct2025

  How does continuous annealing improve the mechanical properties of Q355GNH?

  Continuous annealing turns Q355GNH from a "hard but brittle" cold-rolled product into a balanced, high-performance steel—meeting both the mechanical requirements for forming/loading and the weathering

• 13/Oct2025

  What is the continuous annealing process for Q355GNH?

  The continuous annealing process for Q355GNH (a high weathering resistance structural steel, often processed as cold-rolled strips for precision applications like heat exchanger components or architec