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Standard fluid pipes

PIC-(Standard fluid pipes)
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  Chinese standard GB/T8163.which is equal to API or ASTM. Mainly Application: Conveying water,gas oil and other fluids.Material grade: 10#, 20#,A106/A53 GrB, Api5l Grb.Chemical composition and mechanical properties:
Standard Steel grade Chemical constituents (%)
C Mn Si Cr Ni Cu P.S
GB/T8163 10 0.07~0.13 0.35~0.65 0.17~0.37 ≤ 0.15 ≤ 0.30 ≤ 0.25 ≤ 0.030
20 0.17~0.23 0.35~0.65 0.17~0.37 ≤ 0.25 ≤ 0.25 ≤ 0.25 ≤ 0.030
Q345 0.12~0.20 1.20~1.60 0.20~0.55       ≤ 0.030
Mechanical properties Tensile strength (MPa) Yield strength (MPa) Elongation(%)
10 335~475 ≥ 205 ≥ 24
20 410~550 ≥ 245 ≥ 20
Q345 490~665 ≥ 325 ≥ 21