Client： SINOHYDRO BUREAU 7 CO., LTD.
Date：2016/07

Φ8.3×0.4T×1.5L(7P/R )- straight ring- 2 set

Φ8.3×0.4T×1.8L(7P/R )- 

straight ring- 6 set
right ring- 3 set
left ring- 3 set

Vibration method：Pnuematic vibration