open forging

... 锻造forging 无型锻造open forging 水压机锻造hydraulic forging ...

 hammer forging

... hammerer锻工 hammer forging锤锻、自由锻造、无型锻造 hammer head锤头 ...

 forging

... air tool 锻造 forging 无型锻造 open forging 水压机锻造 ...