Large
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Catalog
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Standard
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Specification
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Grade
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Thickness/mm
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State of delivery
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Note
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Main application
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Low-alloy
structural
steel
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GB/T 1591-2008
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Q345
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A、B
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6-130
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AR、CR
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Can supply plus Z in GB 5313 standard
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Used in locomotive, lifting equipment, machinery, electric engine, boiler, petroleum, chemical, shipbuilding, bridge and other welded parts in low temperature.
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C、D
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6-100
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CR
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|||||
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E
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6-80
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CR
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|||||
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Q390
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A、B
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6-100
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AR、CR
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||||
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C、D
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6-80
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CR
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|||||
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E
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6-50
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CR
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|||||
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Q420
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A、B
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6-100
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AR、CR
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||||
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C、D
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6-80
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CR
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|||||
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E
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6-50
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CR
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|||||
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Q460
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C、D
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6-80
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CR
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||||
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E
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6-50
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CR
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|||||
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Q550
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C、D
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6-30
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TMCP
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Low-alloy structural steel