In contrast to conventional centralizers screwed on sucker rod, new-type centralizers have several advantages of simple structure,ease use, less cost and any positions spaced on the rod string.

• 它相对接头连接式抽油杆扶正器具有结构简单、成本低、易于安装使用,能够根据生产需要布置在抽油杆柱任意位置的特点。