Knowledge

• 12/Sep2025

  What does the weather resistance of Q235NH specifically refer to?

  The "weather resistance" of Q235NH specifically refers to its ability to form a dense, stable, and adherent rust layer (patina) when exposed to the natural atmosphere, which significantly slows down t

• 11/Sep2025

  What should be noted during the storage and transportation of Q235NH?

  The core of Q235NH’s storage and transportation is to minimize contact with moisture, pollutants, and physical damage—this ensures that when the steel is put into use, it can form a uniform, dense pro

• 11/Sep2025

  What are the special requirements or precautions when welding Q235NH?

  Welding Q235NH is not just about ensuring mechanical strength—it’s more about preserving the material’s core advantage (weather resistance) through matching materials, strict process control, and targ

• 11/Sep2025

  How does the mechanical property of Q235NH change with temperature?

  The mechanical properties of Q235NH (low-alloy weathering steel) exhibit temperature-dependent variations, which are primarily reflected in changes to strength, toughness, and plasticity—key to ensuri

• 11/Sep2025

  How much can the corrosion resistance of Q235NH be improved compared to ordin...

  Q235NH’s corrosion resistance improvement over ordinary carbon steel is not only reflected in the numerical reduction of corrosion rate but also in the long-term stability of the rust layer, which gre

• 11/Sep2025

  What are the mechanical property indicators of Q235NH?

  Q235NH’s mechanical properties are tailored for mild-corrosion, low-to-medium load structural scenarios (e.g., inland building frames, street light poles), balancing strength, ductility, low-temperatu

• 11/Sep2025

  What are the main chemical components of Q235NH?

  The chemical composition of Q235NH is designed around "basic mechanical properties + enhanced atmospheric corrosion resistance": base elements (C, Si, Mn) ensure its load-bearing capacity, while alloy

• 11/Sep2025

  What environments and occasions is Q235NH suitable for?

  Q235NH is a cost-effective choice for light-load, non-critical structures in mild inland atmospheres, balancing basic corrosion resistance and economic efficiency without requiring the high performanc

• 11/Sep2025

  ASTM A312 stainless steel TP304 seamless pickled pipe

  ASTM A312 TP304 is a seamless austenitic stainless steel pipe with excellent corrosion and oxidation resistance, suitable for high-temperature, high-pressure applications in industries such as oil, ga

• 11/Sep2025

  A312 TP304 stainless steel thick wall pipe for corrosive environment

  ASTM A312 TP304 is an austenitic stainless steel pipe containing 18% chromium and 8% nickel, renowned for its excellent corrosion and oxidation resistance, high strength, and ductility.