GOST 18718-1973 Guide posts for changeable sheet stamping dies Construction and dimensions《板材冲压可换模用立柱 结构及尺寸》.pdf

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GOST 18719-1973 Guide posts with shoulders for changeable sheet stamping dies Construction and dimensions《板材冲压可换模用台式立柱 结构及尺寸》.pdf

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