Knowledge

• 04/Nov2025

  What should be noted when cutting S355J0WP?

  The core of cutting S355J0WP is to "minimize heat damage + protect the weathering layer + restore cut edges." This ensures the final product retains its designed corrosion resistance.

• 04/Nov2025

  How to deal with rust on the surface of Q295GNH?

  For Q295GNH, "stable rust = protection, unstable rust = need treatment." The goal is not to "eliminate all rust," but to help it form a dense, adherent protective patina.

• 04/Nov2025

  What are the advantages of the rust layer of Corten B?

  The rust layer of Corten B (a weathering steel grade) offers four core advantages, primarily centered on corrosion resistance enhancement and practical application value.

• 03/Nov2025

  How to maintain the rust layer of Corten B to ensure its performance?

  Corten B’s patina requires "minimal intervention"—gentle cleaning, prompt damage repair, and avoiding harsh disturbances are key to keeping it effective.

• 03/Nov2025

  What are the factors that affect the formation of the rust layer of Corten B?

  The patina forms best in clean, moderately humid environments with good air circulation, on properly prepared surfaces, and relies on Corten B’s alloy composition to stabilize. Controlling these facto

• 03/Nov2025

  Will the rust layer of Corten B fall off?

  The normal protective patina of Corten B has good adhesion and will not fall off easily. Falling off is mostly a result of abnormal use conditions or external damage, which can be avoided by standardi

• 03/Nov2025

  What are the common specifications of S355J0WP?

  These specifications ensure S355J0WP balances strength, ductility, and weather resistance, making it suitable for outdoor use where long-term corrosion protection (without painting) is required. For e

• 03/Nov2025

  Under what circumstances is it necessary to perform re-rusting treatment on S...

  Re-rusting ensures S355J2W regains its intended corrosion resistance when its natural protective layer is compromised, incomplete, or degraded—critical for maintaining long-term durability in outdoor

• 03/Nov2025

  Is Q295GNH prone to cracking during stamping?

  Q295GNH has good stamping performance by nature. Cracking is not a common issue if processes, dies, and material pre-treatment are properly managed.

• 03/Nov2025

  How to repair local rust on painted S355K2W?

  Repairing local rust on painted S355K2W (a weathering steel grade, often used in outdoor structures) requires careful handling to preserve both corrosion resistance and the integrity of the coating.