GOST 19399-1974 Sand blast bushes for core boxes Design and dimensions《型芯箱用带密封喷砂衬套 结构及尺寸》.pdf

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GOST 21297-1975 Guide bushes with screw hole for heated core boxes Design and dimensions《加热型芯箱用带螺纹孔导向衬套 结构及尺寸》.pdf

GOST 21298-1975 Pins with screw hole for heated core boxes Design and dimensions《加热型芯箱用带螺纹孔销钉 结构及尺寸》.pdf

GOST 21299-1975 Pins with screw tail for heated core boxes Design and dimensions《加热型芯箱用带螺纹尾端销钉 结构及尺寸》.pdf

GOST 21296-1975 Gentring bushes with screw hole for heated core boxes Design and dimensions《加热型芯箱用带螺纹孔定心衬筒 结构及尺寸》.pdf

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