Double Layer Anti Settlement D400 Ductile Iron Covers / Round Manhole Cover

Product Specification

Ductile Iron Double-Layer Anti-Settlement Manhole Cover

Production information

The ductile iron double-layer anti-settlement manhole cover is an advanced urban infrastructure product designed to prevent ground settlement around manholes and ensure the long-term stability of roads, pavements, and other surfaces. It is widely used in urban areas, highways, industrial parks, and other locations requiring enhanced safety and durability. The double-layer design and anti-settlement structure provide superior performance for heavy load conditions while reducing maintenance costs over time.
The ductile iron double-layer anti-settlement manhole cover is specifically engineered to address two common problems in urban infrastructure: manhole settlement and surface alignment issues. Its double-layer structure consists of an upper frame and a lower supporting frame, which work together to distribute pressure evenly and prevent sinking. The use of ductile iron material ensures high strength, excellent toughness, and corrosion resistance, making it ideal for long-term applications in various environmental conditions.

Features and Advantages:

(1) Anti-Settlement Design

• The double-layer structure ensures that the load is distributed evenly between the manhole cover and the surrounding surface.

• Prevents settlement caused by heavy traffic or soft soil, maintaining the alignment of the road or pavement.

(2) High Strength and Durability

• Made of ductile iron (QT450-10 or QT500-7), which offers superior tensile strength and toughness compared to traditional grey cast iron.

• Resistant to deformation and breakage under heavy loads, even in high-traffic areas.

(3) Noise Reduction

• Equipped with rubber seals or other anti-vibration components to minimize noise when vehicles pass over the manhole cover.

(4) Corrosion and Weather Resistance

• Treated with anti-corrosion coatings such as hot-dip galvanizing, asphalt coating, or electrostatic spraying to protect against rust and harsh environmental conditions.

(5) Extended Service Life

• Designed for a service life of 30 years or more, reducing the need for frequent replacements and repairs.

(6) Safety and Anti-Theft Features

• Can include locking mechanisms or hinged designs to prevent unauthorized access and theft.

• The double-layer structure provides additional reinforcement for safety.

(7) Easy Installation and Maintenance

• Modular design makes it easy to install, inspect, and maintain.

• The adjustable frame allows for quick alignment with the surrounding surface.

Technical Parameters:

Company Introduction:

SND has been producing and selling metal goods for about 20 years.By using manufacturing techniques including sand casting, lost wax casting, lost foam casting, and precision machining, the company has been supplying goods made of materials like cast iron, steel, stainless steel, aluminum, etc. Additionally offered are surface finishing and assembly services.

Our company has successfully created products in a variety of industries, including automotive, rail transportation, agricultural machinery, chemical, energy, electricity, water, air compressor, and construction, thanks to our consistent efforts over the past few years.

Our factories' ISO9001-accredited quality control systems guarantee a consistent and dependable quality for each and every component.

Spectrometer, ultrasonic, magnetic, permeability, elongation, tensile/yield strength, and other inspections are carried out as part of routine production procedures.