Which one of the following processes in most commonly used for the forging of bolt heads of hexagonal shape?

Which one of the following processes in most commonly used for the for

1.	Which one of the following processes in most commonly used for the forging of bolt heads of hexagonal shape?
A.	Closed die drop forging
B.	Open die upset forging
C.	Close die press forging
D.	Open die progressive forging.
Answer» E.

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Which one of the following processes in most commonly used for the forging of bolt heads of hexagonal shape?

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