Q345B Thick Wall Square Tube

Q345B thick-walled square pipe, four grades (Q345B, Q345C, Q345D, Q345E), respectively, represent the impact work at different temperatures (Q345B for 20 ℃ room temperature impact, Q345C for 0 ℃ impact, Q345D for -20 ℃ impact, Q345E for -40 ℃ impact), the impact work of the value of the impact work varies with different impact temperatures.
Q345B thick-walled square tube is mostly used for mechanical rails, agricultural equipment skeleton, steel and wood furniture and curtain wall building construction.
GNEE Group specializes in manufacturing Q345B thick wall square tubes, providing you with high quality low alloy high strength square tubes, if you need, please contact us immediately.

Cold Drawn Seamless Steel Pipe Q345B Specification

The production of Q345B seamless square tube mainly includes billet preparation, piercing, centering, rolling, straightening and inspection.
Billet preparation is the first step in the production process, which involves selecting billets with the required chemical composition and mechanical properties, and straightening and cutting them.
Piercing is the key step in forming a cylindrical burr, where the billet is heated and pierced by a piercing machine. The centering process is designed to eliminate residual stresses within the burr and improve accuracy and straightness.
The rolling process, on the other hand, gradually forms the burr into a square tube shape, which is realized through multiple passes of rolling deformation.
The straightening and inspection process ensures that the product quality meets the standards.

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