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The use of Duplex stainless steel has been approved for use on Japanese tankers and vessels by the leading classification society Class NK. Class NK (Nippon Kajo Kyokai) is a well-respected organization that was founded to regulate the shipping industry in Japan.
In stainless steel production, there are three kinds of smelting processes. This is because the chemical composition of every stainless steel product reacts differently in terms of resistance to corrosion.
