900m× 1200mm Culvert Balloon

A culvert balloon is an inflatable rubber/PVC form used to create circular culverts, drainage pipes, tunnels, and concrete pipe structures without using permanent rigid formwork. Typical specifications: Diameter: e.g. 900 mm Length: e.g. 12 metres Material: Heavy-duty reinforced rubber/PVC Inflation: Air pump/compressor Application: Reinforced concrete culverts and drainage structures Reusable: Yes, when properly handled and maintained For your 900 mm × 12 m culvert balloon, it can be used as an internal former