Ductile Iron Manhole Covers, Anti-Theft Municipal Road Covers, Wholesale From The Manufacturer.

Ductile Iron Manhole Covers, Anti-Theft Municipal Road Covers, Wholesale From The Manufacturer. Anti-Theft Design: Built-in concealed locks and anti-theft pins prevent unauthorized opening without special tools. High Load Capacity: Offers grades A15 to F900, supporting loads from 1.5 to 90 tons for various road scenarios. Corrosion Resistance: Service life exceeds 30 years, with corrosion resistance 5 times that of ordinary steel pipes. Noise Reduction: EPDM rubber shock absorbers reduce noise from 70-80 dB to 50-60 dB for quiet operation. Customizable Options: Supports customization for weight, color, surface treatment, load capacity, and specific dimensions. Easy Installation: Lighter weight than gray cast iron with anchor holes for secure fixation and convenient maintenance.