Industrial-Grade Durable Round and Square Ductile Iron Manhole Covers (with frames available)

Industrial-Grade Durable Round and Square Ductile Iron Manhole Covers (with frames available). Anti-Theft Design: Built-in concealed locks or anti-theft pins prevent unauthorized opening. Noise Reduction: EPDM rubber pad reduces noise from 70-80 dB to 50-60 dB. Corrosion Resistance: 5x more resistant than steel; service life exceeds 30 years. Customizable Options: Custom text, patterns, logos, and non-standard sizes available. Wide Load Bearing Range: Options from A15 (1.5t) to F900 (90t) for various scenarios. EN124 Standard Compliance: Manufactured strictly following EN124 international standards.