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China GB/T 4171 Q550NH Weather Resistant Steel Plate GB/T 4171 specifies the size, shape, weight and allowable deviation of weather resistant structural steel, technical requirements, test methods, inspection rules, packaging, marking and quality certificate.GB/T 4171 standard main steel grade:Q550NH,Q500NH,Q460NH,Q415NH, Q295NH,Q265GNH and so on. Q310GNH steel,Q310GNH weathering steel,Q310GNH corten Q310GNH steel is a kind of weathering steel which under China GB/T 4171 standard.As the weathering steel, Q310GNH steel is widely used in vehicle, bridge, tower, container and so on. More information about Q310GNH steel, please see the following:

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