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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.

 

q345b steel plate mill certificate
q345b steel plate mill certificate
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