Heavy Duty Culvert Moulding Balloons

• Inflatable rubber formwork for concrete culvert construction. • Used for highway bridge culverts, sewage discharge projects, tunnel side ditches, and architectural engineering. • Durable rubber material designed for repeated use. • Provides a consistent internal diameter for culverts during concrete pouring. • Available in various sizes to suit different project requirements. • Brand: Other (Generic). • Condition: Brand New.