Q345qCNH grade is a kind of structural steel plate for bridges. It adds a certain amount of alloying elements, such as P, Cr, Ni, Cu, Mo, etc. to the steel to form a protective layer on the surface of the metal substrate to improve resistance Steel with atmospheric corrosion function.
Weather-resistant bridge steel plate steel fulfills the standard GB/T714-2014
Structural steel plates for bridges are: Q345qDNH, Q345qENH, Q345qFNH, Q370qDNH, Q370qENH, Q370qFNH, Q420qDNH, Q420qENH, Q420qFNH, Q460qDNH, Q460qENH, Q460qFNH, Q500qDNH, Q500qENQ, Q500qDNH, Q500qENH, Q500qFNHQ550, when the thickness is required The Z-direction function level is added to the back of the trademark, such as: Q345qDNHZ25, Q370qDNHZ15, Q420qEZ35, etc.
Q345qCNH steel plates specification
Thickness : 5-200mm
Width : 1000mm, 1500mm, or as required
Length : 2000mm, 4000mm, or as required
Delivery state : hot rolled, cold rolled
Q345qCNH weather-resistant bridge steel plate delivery status
For bare steel with atmospheric corrosion resistance, hot rolling, thermomechanical rolling and quenching and tempering delivery conditions should be selected. When a cooling method that is faster than the cooling rate in air is selected for cooling, tempering should be performed.
