Mandrels for roll forming machine tools (the inner diameter of the mandrels for rolling formability is between 75mm and 4mm) 滚压成形机床用芯轴(转筒成形用的芯轴,内径在75mm至400mm之间),
Mandrels for spin forming machine tools with roll forming functions (the inner diameter of the mandrels for rolling formability is between 75mm and 4mm) 有滚压功能的旋压成形机用芯轴(转筒成形用的芯轴,内径在75mm至400mm之间),