Q345GJC Q345GJC-Z15 steel for building structure

The steel materials used for building structures are relatively special, and the performance requirements of thick plates are strict. Generally, thick plates require additional Z-direction performance, and the process is complex.

Q345GJC Q345GJC-Z15 steel thickness direction performance:
Thickness direction performance refers to the tearing resistance of materials in thickness direction, which is specified in GB/T 5313.

Q345GJC Q345GJC-Z15 steel thickness specification:
Thickness: 8-200mm
Length and width not less than: 1600 * 5000
Thickness deviation: Class B deviation (fixed negative deviation is 0.3mm)
Weight=(thickness+added value)/1000 * width/1000 * length/1000 * 7.85

Q345GJC Q345GJC-Z15 steel ultrasonic flaw detection:
The Q345GJC-Z15 material has its own three-level flaw detection, which complies with the GB/T 2970 standard.

Q345GJC Q345GJC-Z15 steel differences:
There are specific differences in flaw detection, thickness direction performance, P/S content and reduction of area. Q345GJC-Z15 steel is required to be higher than Q345GJC.