According to BS EN 124 "Inspection Manhole Covers"

Group 1: (minimum A15 grade type is selected): Green belts, sidewalks and other areas where motor vehicles are prohibited from entering.

Group 2: (minimum B125 type is selected): sidewalks, non-motorized lanes, car parking lots and underground parking lots.

Group 3: (minimum C250 type is selected): residential areas, back streets and alleys, areas where only light motor vehicles or cars travel, within 0.5m of curbs on both sides of the road.

Group 4: (minimum D400 type is selected): urban trunk roads, highways, high-grade highways, expressways and other areas.

Group 5: (minimum E600 type is selected): cargo terminals, terminals, airports and other areas.

Group 6: (minimum F900 type is selected): airport runways and other areas.

The load capacity of the manhole cover refers to the pressure test performed by a pressure testing machine within a unit area, usually 40 tons in weight. And if it is a vehicle, the calculation formula for a 5-axle heavy-duty truck is: 5 axles x 40 tons=200 tons. When the total vehicle weight is 200T, this heavy-duty manhole cover can ensure passage.

Jintai provides customers with high-quality ductile iron access covers. The characteristics of Jintai's ductile iron access covers are summarized in the following 7 aspects.

1.Ductile iron access covers material is made of ductile iron, which has high strength, high toughness and good wear resistance, making it about 30% lighter than the same type of gray cast iron manhole covers.

2. Our Ductile iron access covers have good plasticity and elongation rate Greater than or equal to 7%, which is similar to high carbon steel.

3.Ductile iron access covers load levels have different load levels in accordance with BS EN 124 to meet the application needs of different roads and places.

4.Jintai's ductile iron access covers exceptionally Long Life, our product is specifically designed and engineered to provide an unusually long service life, ensuring durability and reliability for customers.

The following is an introduction to the advantages of Jintai's ductile iron access covers in terms of performance, anti-slip design, application fields, machining and painting.

1. Security lock: Our ductile iron access covers are equipped with a security lock device according to application requirements to prevent unauthorized opening and illegal intrusion.

2. Can be machined: During the production and manufacturing process, we will reserve sufficient processing allowance according to customer requirements and machine the contact surfaces of the manhole cover and manhole ring to make them more consistent and noise-free.

3. Customizable; in addition to our standard manhole cover series, we also provide customized designs.

4. Anti-corrosion coating: Our conventional anti-corrosion coating for ductile iron access covers is anti-rust asphalt paint. We can also perform anti-corrosion coating treatment according to customer requirements. Convenient for customers to make diverse choices.

1. Meet individual needs: Provide customized pipeline products to meet the specific needs of customers and enhance the personalization and practicality of services.

2. Save time and cost: Through professional consultation and calculation, customers can save time and cost in project planning and execution.

3. Scalability: With the continuous updating of technology and industry standards, the services and products provided have better scalability and adaptability.

4. Transparency: Ensure the transparency of service content and processes so that customers clearly understand the specifics of the services and products provided.

5. Flexibility: Able to respond and adjust quickly to customers' special needs or changes, maintaining flexibility and efficiency of services.

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