BT / SPU 直结式钻头刀杆 BT30×SPU8-80 BT30×SPU13-110 BT30×SPU16-115 BT40×SPU 8-85 BT40×SPU13-100 BT40×SPU13-130 BT40×SPU16-105 BT50×SPU8-90 BT50×SPU13-100 BT50×SPU13-180 BT50×SPU16-105 BT50×SPU16-130 BT50×SPU16-190