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Hot rolled steel plate Q345B in chinese steel specification gb/t 1591
Hot rolled steel plate Q345B in chinese steel specification gb/t 1591,Steel plate Q345B is one high strength low alloy steel material which delivery with As rolled or Normalising Rolling.In new version of GB/T 1591,hot rolled steel plate Q345B is replaced by hot rolled steel plate Q355B.
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GB/T 1591 hot rolled steel plate Q345B is equal to EN 10025-2 S355JR steel plate,technical data as belows:
Tensile strength: 470 Mpa to 630 Mpa
Yield strength: 345 Mpa Min.
Density: 7.85 kg/dm3
Grade Q345B has a higher tensile strength than Grade Q235B (equivalent to S235JR),So hot rolled steel plate Q345B owns better weldability property than hot rolled steel plate Q235B in high tension structural projects.
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