What is the production process of Q345B seamless steel pipe

The production method of Q345B seamless steel pipe and the manufacturing equipment used to implement the manufacturing method can manufacture Q345B seamless steel pipe with good productivity and superior performance at low manufacturing cost through simplified manufacturing process.

The production process of Q345B seamless steel pipe is composed of the following (1) to (8) in sequence, and the processes and manufacturing equipment from billet manufacturing to products are connected by a continuous line. (1) the process of making round billets with cross-section shape by continuous casting; (2) the process of cooling billets to the temperature below AR1 transformation point; (3) the process of heating billets to the temperature that can be pierced; (4) the process of piercing rolling and making hollow billets at the strain rate of less than 200 / S; (5) the process of manufacturing steel pipe by continuous extension mill and finishing mill directly connected with rolling mill, extending rolling and finishing rolling hollow pipe blank with predetermined average strain rate, processing degree and finishing rolling temperature; (6) the process of recrystallizing steel pipe at the temperature above Ar3 transformation point; (7) the process of quenching Q345B seamless steel pipe from the temperature above Ar3 transformation point; ⑧ tempering process of Q345B seamless steel pipe.

The above is the common production method of Q345B seamless steel pipe for you to explore. We will continue to innovate the production process of Q345B seamless steel pipe, improve the production quality of Q345B seamless steel pipe, and make more contributions to economic development.