Q345B hladno crtanje kvadratnih cijevi ima dobru stabilnost i kompozitnu strukturu.Pojačan je čelični cijevi.Kombinacija ove strukture omogućava čeličnoj cijevi imati bolju stabilnost.The pipe is not only not easy to corrode in the face of various corrosive media, but also has a relatively stable expansion coefficient, so the cold drawn square pipe is not easy to deform after use and can effectively extend the service life of the pipeline system.
