Knowledge

• 16/Oct2025

  What is the proper post-weld heat treatment for SMA570W?

  SMA570W’s proper PWHT is primarily stress relieving annealing at 550–620°C (with adjusted time based on thickness), unless thin plates or low-hydrogen welding allow omission. Always align parameters w

• 16/Oct2025

  What special considerations are needed when welding SMA570W?

  A concise summary of precautions for welding SMA570W: Select weathering steel-matched welding materials, pre-heat base metal (80-100°C for >25mm thickness), dry electrodes (350-400°C for 60min), use p

• 16/Oct2025

  Can Q355NH and the European standard S355J0WP replace each other?

  Q355NH and S355J0WP are "partially substitutable" but not interchangeable. Substitution is only allowed for non-critical, mild-environment projects after verifying low-temperature toughness, corrosion

• 16/Oct2025

  How long does it take for the rust layer of A588 steel to stabilize?

  The time for the rust layer of A588 steel to stabilize typically ranges from 6 to 24 months, but it is highly dependent on the local environmental conditions, surface state of the steel, and maintenan

• 16/Oct2025

  What is the chemical composition of S355K2W steel?

  The chemical composition of S355K2W steel is strictly defined by the European standard EN 10025-5 (Weathering steels for structural purposes), with clear maximum limits for main elements and minimum r

• 16/Oct2025

  Is the impact toughness of European standard S355K2W better than that of Amer...

  In the temperature range that both steels are commonly used for (-20°C to 0°C), S355K2W’s minimum impact energy (40 J) is significantly higher than A588GrB’s (27 J), making it more resistant to impact

• 16/Oct2025

  How does the choice of welding process affect the surface treatment requireme...

  The choice of welding process has a significant impact on the surface treatment requirements of S355J0WP steel, mainly manifested in aspects such as surface cleaning before welding, prevention of inte

• 15/Oct2025

  UNS32205 seamless stainless steel pipe for pressure

  UNS S32205 (Duplex 2205) seamless stainless steel pipe is ideally suited for high-pressure applications due to its high strength, corrosion resistance, and reliability.

• 15/Oct2025

  ASME SA268 TP410 seamless stainless steel pipe for boilers

  ASME SA268 TP410 seamless pipe is a martensitic stainless steel suitable for boilers due to its high strength, good heat resistance, and ductility, but its corrosion resistance is limited compared to

• 15/Oct2025

  ASTM A312 TP316Ti stainless steel seamless industrial pipe

  ASTM A312 TP316Ti is a seamless, austenitic stainless steel pipe designed for high-temperature and corrosive applications, particularly welded applications.