Q355D is a high-strength low-alloy structural steel plate manufactured according to GB/T 1591. With a minimum yield strength of 355 MPa and excellent impact toughness at low temperatures, Q355D is widely used in heavy engineering, steel structures, machinery manufacturing, and infrastructure projects.

Compared with conventional structural steel grades, Q355D provides higher strength and better toughness, helping engineers design safer and more efficient structures. The grade requires impact testing at -20°C, making it suitable for applications exposed to cold weather conditions or fluctuating temperatures.

As a reliable China steel plate supplier, CEHE STEEL provides Q355D steel plates with customized thickness, cutting services, surface treatment, and inspection support to meet different fabrication and project requirements.