Q390ND is a normalized high-strength structural steel plate designed for demanding engineering applications requiring improved low-temperature toughness.

According to GB/T 1591, Q390ND provides a minimum yield strength of 390 MPa with impact testing at -20°C, making it suitable for outdoor structures and cold-weather environments.

With excellent strength, toughness, and weldability, Q390ND is widely used in large welded structures and heavy engineering projects.