Q390B is a high-strength low-alloy structural steel plate manufactured according to GB/T 1591. It provides a minimum yield strength of 390 MPa, offering higher strength than conventional Q355 structural steel while maintaining good weldability and fabrication performance.

With its excellent strength-to-weight ratio, Q390B allows engineers to design lighter structures without compromising safety and durability. The steel grade is widely used in industrial buildings, heavy equipment, machinery structures, and general engineering projects.

CEHE STEEL supplies Q390B steel plates with customized dimensions, complete Mill Test Certificates (MTC), and export inspection support for global fabrication projects.