HB 4225-1989 MJ内螺纹小径用圆锥尾量头双头光滑塞规 MJ3.5~MJ39.pdf

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HB 778-1973 1~8级精度用圆锥尾量头双头光面塞规D3~30mm.pdf

HB 3454-1984 IT6至IT4级用硬质合金圆锥尾量头双头光滑塞规(D5~40).pdf

HB 3446-1984 IT6至IT14级用圆锥尾量头双头光滑塞规(D≥1~40).pdf

HB 4545-1992 MJ内螺纹第Ⅱ系列工艺底孔用圆锥尾量头双头光滑塞规MJ3.5~MJ40.pdf

HB 4541-1992 MJ内螺纹第Ⅰ系列工艺底孔用圆锥尾量头双头光滑塞规.pdf

HB 4225-1989 MJ内螺纹小径用圆锥尾量头双头光滑塞规 MJ3.5～MJ3.9.pdf

HB 3446-1984 ⅠT6至ⅠT14级用圆锥尾量头双头光滑塞规(D≥1～40).pdf

HB 4545-1992 mj内螺纹第Ⅱ系列工艺底孔用圆锥尾量头双头光滑塞规 MJ3.5~MJ40.pdf

HB 3454-1984 IT6至IT14级用硬质合金圆锥尾量头双头光滑塞规（D>5~40）.pdf

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