Due to DNV AH40 shipbuilding steel plate chronically salt fog, humidity and seawater environment, affected by the erosion of seawater and sea creatures produce severe electrochemical corrosion, paint film is prone to violent saponification, aging, DNV AH40 shipbuilding steel plate have very serious corrosion structure, not only reduces the DNV AH40 shipbuilding steel plate mechanics performance, shorten its service life, and because of far away from the coast, not like a ship on a regular basis for repair and maintenance.
Therefore, DNV AH40 shipbuilding steel plate has a higher requirement for its corrosion resistance.
With the increasing efforts of ocean development, the demand for DNV AH40 shipbuilding steel plate will continue to increase, and the steel used for offshore platform will become the focus of domestic steel enterprises in the next few years.
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