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GB/T13793-2008 Grade 20 welded steel pipe

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  • 11-May-2024

GB/T13793-2008 Grade 20 welded steel pipe is under GB/T13793-2008 standard,GB/T13793-2008 Gr.20 steel pipe mainly used in transmission tower engineering, pile, water, oil and gas pipeline engineering, machinery industry, municipal engineering, roads and ancillary facilities. The surface can be exposed to oil, color paint, 3LPE or other preservative treatment, through a series of chemical composition and mechanical properties of the test; size and visual inspection, and non-destructive examination.

GB/T 13793-2008 Gr.20 steel pipe Mechanical properties

mechanical property of 20 

Grade

 yield

Tensile

Elongation after

strength Rel/N/MM^2

strength

fracture A/%

 

R/N/MM^2

 

no less than

20

235

390

19

GB/T13793-2008 Grade 20 welded steel pipe chemical composition:

C:0.17-0.23;Si:0.17-0.37;Mn:0.35-0.65;P≤0.035;S≤0.035;Ni≤0.30;Cr≤0.25;Cu≤0.25

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