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Q235B welded steel pipes is an industrial steel pipe which under GB/T 3091-2008 standard, Q235B welded steel pipes’s surface can be painted black paint, varnish, antiseptic oil, galvanized or according to customer requirements, mainly used in low-pressure liquid, water, gas, oil, pipeline, construction, fence, Or wooden pallet packing, piping paint, end plastic cover or according to customer requirements.
GB/T 3091 Q235B welded steel pipes Chemical composition
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chemical composition of Q235B |
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Grade |
Class |
C |
Mn |
Si |
S |
P |
|
|
|
no more than |
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Q235 |
B |
0.12-0.2 |
0.3-0.7 |
0.3 |
0.045 |
0.045 |
Q235B welded steel pipes Mechanical properties
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mechanical property of Q235B |
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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 |
|
|
Q235B |
235 |
225 |
370 |
15 |
20 |
About GB/T 3091-2008 Q235B welded steel pipes chemical properties and production process, if you have any questions, please feel free to contact us, we will give you a detailed answer. We are maintained at more than 1,000 tons per month GB/T 3091-2008 Q235B welded steel pipes stocks, to meet your needs, please call.
