Q345D is a commonly used low alloy sheet in China.GB/T1591 Q345 steel plate external implementation of the standard is: GB709, the internal implementation of the standard is:GB/t1591-94, due to the reasons for the implementation of the standard,such as the negative tolerance of the steel plate.The latest implementation of the standard is GB/T1591-2008.Q345D steel plate welding needs to be preheated first,because the carbon content is relatively high.
Q345D Steel Plate Specification:
Thickness :1.2mm -600mm
Width :1220mm-4200mm
Length :5000mm-18000mm
Q345D Steel pipe chemical composition:
|
Grade
|
C %
|
Si %
|
Mn %
|
Cr % max
|
Ni % max
|
Cu % max
|
P % max
|
S % max
|
|
Q345D
|
< 0.18
|
< 0.50
|
< 1.70
|
0.30
|
0.50
|
0.30
|
0.30
|
0.30
|
Q345D Steel pipe Mechanical Property:
|
Steel grade
|
Tensile strength Rm/MPa
|
Yield Strength Rel/MPa
|
Break elongation A%
|
|
Q345D
|
470-630
|
>345
|
21
|
Q345D Steel Plate is mainly used in ships,boilers,pressure vessels,oil storage tanks,bridges,power station equipment,up welding structure lifting transport machinery and other higher load.
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