... into many technical solutions for customers. 1 High speed steel-barrel production line(420∼600pcs/hour)A.) Features: This series of ... quantity, 300,000 pieces of barrels.2 Medium speed steel-barrel production line(300∼360pcs/hour) A.) Features: This series of ... ,000∼600,000 pieces of barrels. 3 Low speed steel-barrel production line(50∼120pcs/hour) A.) Features: This series of ...