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12L13易切削钢 11SMNPB39易车铁 12L14 1215圆钢ASTM1141光亮棒
AISI430F易切削钢 11SMNPB37 1.0737 11SMNPB39 易车铁 量大从优
供AISI430F易切削钢1.0737易车铁11SMNPB39冷拉光亮棒15SMn13圆钢