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Q345A welded steel pipes belongs low-alloy high-strength steel pipe which under GB/T 3091-2008 standard, Q345A welded steel pipes mainly for boilers, heat exchangers, petroleum, aerospace, chemicals, electricity, military. The surface can be polished finish, black, paint, oil, galvanized, PE coating, PVC coating, anti-rust oil, anti-rust paint, color pre-coating for protection.
GB/T 3091-2008 Q345A welded pipes Chemical composition
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chemical composition of Q345A |
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Grade |
Class |
C |
Mn |
Si |
S |
P |
|
|
|
no more than |
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Q345 |
A |
<=0.2 |
<=1.7 |
<=0.5 |
0.035 |
0.035 |
Q345A welded steel pipe Mechanical properties
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mechanical property of Q345A |
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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 |
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|
Q345A |
345 |
325 |
470 |
13 |
18 |
KUNFENG Steel as one of the most popular GB/T 3091 Q345A welded steel pipe supplier in China, we only offer qualified GB/T 3091-2008 Q345A welded steel pipe products with the best quality and reasonable price for our customers.welcome to inquire.
