GB3094 Q345 Square Tube Chemical Composition Analysis:
Grade |
C |
Si |
Mn |
P |
S |
|
GB3094 Q345 |
A |
≤0.20 |
≤0.50 |
≤1.70 |
0.035 |
0.035 |
B |
0.035 |
0.035 |
||||
C |
0.030 |
0.030 |
||||
D |
≤0.18 |
0.030 |
0.025 |
|||
E |
0.025 |
0.020 |
GB3094 Q345 Square Pipe Mechanical Properties:
Grade |
Thickness mm |
Yield strength MPa |
Tensile strength MPa |
Elongation % |
|
GB3094 Q345 |
A |
≤40 |
≥335 |
470~630 |
≥20 |
B |
|||||
C |
≥21 |
||||
D |
|||||
E |
Q345B Square Steel Tube Application:Q345B Square Steel Tube is widely used in Natural gas, petroleum, chemical industry, electric power,metallurgy thermodynamic fields, water supply engineering, steam heating,hydroelectric power station and long pipeline transportation projects and so on.
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