Harbors and terminal airbag mandrel

Huanghai brand pneumatic mandrel airbags is widely used in construction industry. There is different size cylindrical cavity in the big concrete constructure for bridge, road, railway and tunnel. Choose the right specification of mandrel to march it. The pneumatic mandrel can be inflated with water or air during application. When dismounting the mandrel, release the air or water, wash away the mud and sand, dry it and preserve for next usage.