Q390C is a high-strength structural steel plate with improved impact toughness compared with Q390B. Manufactured according to GB/T 1591, Q390C offers a minimum yield strength of 390 MPa and requires impact testing at 0°C.

The combination of high strength, good weldability, and reliable toughness makes Q390C suitable for structural applications where higher safety requirements are needed.

Compared with conventional carbon steel plates, Q390C provides better load-bearing capability and helps reduce structural weight in fabrication projects.

CEHE STEEL supplies Q390C steel plates for construction, infrastructure, machinery manufacturing, and heavy engineering applications.