What is the Q690ZTE steel?

Q690ZTE steel for offshore platform description
Grade: Q690ZTE
Category: low alloy steel
Executive standard: GB/T 31945-2015 steel plate for jack-up platform legs
Delivery status: quenching and tempering
Application: steel for ships and marine engineering, making racks and semi-circular plates for jack-up platform legs

 

Q690ZTE steel meaning: Q represents the symbol of yield strength, 690 represents the value of yield strength, and the common steel plate quality grades are E and F respectively. The impact temperature of E grade steel plate is -40℃, and the impact temperature of F grade steel plate is -60℃.
The grades of Q690ZTE are Q690ZTEZ15, Q690ZTEZ25, Q690ZTEZ35, Q690ZTFZ15, Q690ZTFZ25, Q690ZTFZ35

 

Q690ZT steel plate fixed rolling conditions:
1. Indicate the thickness, width and length of the steel plate
2. The quenching and tempering heat treatment of the steel plate should be carried out by the purchaser
3. Each steel plate should be inspected by ultrasonic flaw detection