Model 409 - the cheapest model (BAR), commonly used as automobile exhaust, is a ferritic stainless steel (chrome steel).
型号409——最廉价的型号(英美)，通常用作汽车排气管，属铁素体不锈钢(铬钢)。
Model 409 - the cheapest model (BAR), commonly used as automobile exhaust, is a ferritic stainless steel (chrome steel).
型号409——最廉价的型号(英美)，通常用作汽车排气管，属铁素体不锈钢(铬钢)。
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