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Q345B steel plate

Q345B steel plate,Q355B steel plate,carbon plate Q345B is high tensile strength carbon steel materials.In old version GB/T 1591,grade writes as Q345B steel plate,in new version GB/T 1591,this grade writes as Q355B steel plate.

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Q345B steel plate application:

 

CARBON PLATE Q345B is suitable for bridges,vehicles,pipelines,buildings and all kind of containers,plant structures and other structural parts.

 

Since 2018,Q345B steel plate is replaced by Q355B steel plate,the mechanical property and chemical composition keep the same.

 

Q345B steel plate mechanical property:

 

Tensile strength: 470 to 630 Mpa

Yield strength: 345 Mpa Min.for plate thickness ≤ 16mm

325 Mpa Min.for plate 16mm<thickness ≤ 35mm

295 Mpa Min.for plate 35mm<thickness ≤ 50mm

275 Mpa Min.for plate 50mm<thickness

Density: 7.85 kg/dm3

 

 

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