National standard "cone tolerance and coordination" Q & A

In the past, China did not have the national standard of “cone tolerance and cooperation”. In order to meet the growing needs of mechanical manufacturing, we ensure the interchange, matching and improvement of product quality of conical joints in recent years. Has issued GB157-89 "taper and cone angle series", GB4096-83 "angle and angle series of prisms", GB11334-89 "cone tolerance", GB11335-89 "limit deviation of the tolerance angle", GB1236 -90 "Cone Matching" and other five national standards, in order to promote the implementation of the new national standard, we will introduce in a question and answer format.

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