Descriptions:

Rubber core mold has different names as different using position, such as concrete core unit pneumatic pipe, prefabricate core unit pneumatic pipe, precast slab pneumatic pipe, and bridge rubber pneumatic pipe and so on.

Pneumatic pipe block is inflatable in soft rubber, use compressibility of air to its elasticity, use rubber to its limpness and gas tightness, and use anti-tensile cloth to its toughness. And then it is make for different shape under particular pressure, and at the same time it could sustain some concrete pressure, and at last, achieve its function of making holes.

Shape:

1. Round rubber pneumatic pipe block: DN180、DN200=、DN220、DN240、DN250、DN260 and so on

2. Octagon rubber pneumatic pipe block: 760mm×710m-21m、760mm×560mm-600mm×560mm-17m、760mm×460mm×14m and so on.