replica audemars piguet Audemars Piguet (Audemars Piguet), Switzerland's top watchmaking brand, caused a sensation in the watch industry when it launched the Royal Oak series. Before it, the watch industry has never seen a luxury watch with a steel case. The launch of the Royal Oak series also announced the birth of the first stainless steel luxury watch. The price is not lower than the precious metal watch, creating a steel watch. As expensive as the gold watch. As we all know, the basic material of stainless steel is steel, and steel is obtained from iron. The iron ore is smelted in an elevated temperature furnace by an electric furnace steelmaking process or an electric arc steelmaking process. The pig iron obtained by these methods has a high carbon content and a large amount of impurities, is very brittle, cannot be used, and is subjected to further processing. The pig iron will be further processed by techniques such as alkaline oxygen blowing. The liquid pig iron water at a high temperature is filled into the converter vessel, and then oxygen is blown into the molten iron with a high pressure, and the mixture is heated to 1,650 degrees Celsius.
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