技术参数：Technical parameters: 材料及构造：卷筒本体及安装法兰采用钢件制造。弹簧为高寿命高等级的弹簧钢。
Materials &Structurction: The drum body and mounting flange are made of steel. Spring is the high life high-grade spring steel.
卷绕速度：水平卷绕 63m/min 垂直卷绕 30m/min Winding speed: Horizontal : 63m/min Vertical winding: 30m/min
