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These are used to form hollow cylindrical or oval spaces when making concrete culverts, bridges, and other pre-casting formwork

These are used to form hollow cylindrical or oval spaces when making concrete culverts, bridges, and other pre-casting formwork

These are used to form hollow cylindrical or oval spaces when making concrete culverts, bridges, and other pre-casting formwork

These are used to form hollow cylindrical or oval spaces when making concrete culverts, bridges, and other pre-casting formwork

These are used to form hollow cylindrical or oval spaces when making concrete culverts, bridges, and other pre-casting formwork

These are used to form hollow cylindrical or oval spaces when making concrete culverts, bridges, and other pre-casting formwork

These are used to form hollow cylindrical or oval spaces when making concrete culverts, bridges, and other pre-casting formwork

These are used to form hollow cylindrical or oval spaces when making concrete culverts, bridges, and other pre-casting formwork

These are used to create voids or hollow sections within concrete structures such as pipes, culverts, and manholes

These are used to form hollow cylindrical or oval spaces when making concrete culverts, bridges, and other pre-casting formwork

Culvert Balloon is a kind of cylinder bag that can expand, shrink, used to form concrete component of cavity

These are used to create voids or hollow sections within concrete structures such as pipes, culverts, and manholes

Inflatable rubber culvert balloon, used in construction to create hollow cavities in concrete for drainage pipes or culverts

Rubber balloon for culvert formworks is a kind of cylinder bag that can expand, shrink, used to form concrete component of cavity

Inflatable rubber mandrels, also known as culvert balloons or pneumatic tubular formwork

Rubber balloon for culvert formworks is a kind of cylinder bag that can expand, shrink, used to form concrete component of cavity

Rubber balloon for culvert formworks is a kind of cylinder bag that can expand, shrink, used to form concrete component of cavity

Rubber balloon for culvert formworks is a kind of cylinder bag that can expand, shrink, used to form concrete component of cavity

Culvert Balloon is a kind of cylinder bag that can expand, shrink, used to form concrete component of cavity

These are used to create voids or hollow sections within concrete structures such as pipes, culverts, and manholes

These are used to create voids or hollow sections within concrete structures such as pipes, culverts, and manholes

Rubber balloon for culvert formworks is a kind of cylinder bag that can expand, shrink, used to form concrete component of cavity

These are used to form hollow cylindrical or oval spaces when making concrete culverts, bridges, and other pre-casting formwork

Rubber balloon for culvert formworks is a kind of cylinder bag that can expand, shrink, used to form concrete component of cavity