螺钉紧固件A2-70,A4-80等分别对应于哪些钢号请问A2-70,A2-80,A4-70,A4-80等与304,316,316L,317,317L等有配对关系吗?他们分别代表什么?
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![螺钉紧固件A2-70,A4-80等分别对应于哪些钢号请问A2-70,A2-80,A4-70,A4-80等与304,316,316L,317,317L等有配对关系吗?他们分别代表什么?](/uploads/image/z/5369148-36-8.jpg?t=%E8%9E%BA%E9%92%89%E7%B4%A7%E5%9B%BA%E4%BB%B6A2-70%2CA4-80%E7%AD%89%E5%88%86%E5%88%AB%E5%AF%B9%E5%BA%94%E4%BA%8E%E5%93%AA%E4%BA%9B%E9%92%A2%E5%8F%B7%E8%AF%B7%E9%97%AEA2-70%2CA2-80%2CA4-70%2CA4-80%E7%AD%89%E4%B8%8E304%2C316%2C316L%2C317%2C317L%E7%AD%89%E6%9C%89%E9%85%8D%E5%AF%B9%E5%85%B3%E7%B3%BB%E5%90%97%3F%E4%BB%96%E4%BB%AC%E5%88%86%E5%88%AB%E4%BB%A3%E8%A1%A8%E4%BB%80%E4%B9%88%3F)
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