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Q345A welded steel pipes is a low-carbon alloy steel (c <0.2%) which under GB/T 3091-2008 standard, Q345A welded steel pipes have comprehensive performance, low temperature performance, cold stamping performance, welding performance and cutting performance. Widely used in bridges, vehicles, ships, construction, pressure vessels, the surface can be painted black paint, varnish, rust oil, hot dip galvanized, cold galvanized, 3PE and so on.
GB/T 3091-2008 Q345B welded steel pipes Chemical composition
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chemical composition of Q345B |
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Grade |
Class |
C |
Mn |
Si |
S |
P |
|
|
|
no more than |
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|
Q345 |
B |
<=0.2 |
<=1.7 |
<=0.5 |
0.035 |
0.035 |
Q345B welded steel pipes Mechanical properties
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mechanical property of Q345B |
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Grade |
lowder yield |
Tensile |
Extensibility after |
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|
strength Rel/N/MM^2 |
strength |
fracture A/% |
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|
no less than |
R/N/MM^2 |
no less than |
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|
t<=16mm |
T>16mm |
no less than |
D<=168.3MM |
D>168.3mm |
|
|
Q345B |
345 |
325 |
470 |
13 |
18 |
If you are looking for the appropriate GB/T 3091 Q345B welded pipe products, please contact us, we will give you a detailed answer, we are maintained at more than 1,000 tons per month GB/T 3091-2008 Q345B welded steel pipes stock, to meet your needs , Welcome to inquire.
