QJ 1779-1989 普通螺纹用搓丝板技术条件.pdf

相关资源

HB 2390-1977 HB241-75、HB242-70螺纹用搓丝板.pdf

QJ 1778-1989 普通螺纹用搓丝板（d=2~16mm）.pdf

QJ 1778-1989 普通螺纹用搓丝板(d=2～16mm).pdf

HB 2390-1977 HB 241-75、HB 242-70螺纹用搓丝板 d＝2-6mm t＝0.35-2mm.pdf

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