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D400 Ductile Iron Manhole Cover JRC14 China Factory Suppliers

D400 Ductile Iron Manhole Cover JRC14 China Factory Suppliers

High-grade JRC14 ductile iron manhole cover with D400 specification and black bitumen painting. Leading China factory suppliers providing ISO1083 compliant, corrosion-resistant urban infrastructure solutions.

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Product Details

The Ductile Iron Manhole Cover JRC14 is a premium engineering solution designed for high-load urban and industrial environments. Engineered from high-grade ductile iron cast, this cover provides exceptional structural integrity and resilience against heavy traffic, ensuring long-term stability and safety for underground utility access.

To maximize durability and prevent oxidation, the JRC14 features a specialized black bitumen painting process. This protective coating provides a robust barrier against corrosive soil and moisture, making it an ideal choice for drainage systems, municipal roads, and industrial complexes where reliability is non-negotiable.

Detailed Parameters

Product ModelJRC14 Material TextureDuctile Iron Cast
Loading ClassD400 Surface TreatmentBlack Bitumen Painting
Industry StandardMetal Products Manufacturing ApplicationUrban Infrastructure
Corrosion ResistanceHigh (Bitumen Coated) Durability GradeIndustrial Strength
Product CategoryManhole Covers Weight CapacityHeavy Duty

Key Advantages

High Load Capacity

Certified D400 specification ensures the cover can withstand extreme pressure from heavy vehicles.

Extended Lifespan

The ductile iron cast provides superior fatigue resistance compared to standard grey iron.

Anti-Corrosive Coating

Black bitumen painting prevents rust and chemical degradation in harsh environments.

Precision Casting

Advanced manufacturing ensures a perfect fit, reducing noise and vibration under traffic.

Industrial Aesthetic

Professional matte black finish blends seamlessly into urban road surfaces.

Easy Installation

Standardized dimensions allow for rapid deployment and simplified maintenance access.

Product Gallery

Management Platforms

Quality Control

Strict adherence to international casting standards for every unit produced.

Production Flow

Optimized smelting and molding processes for consistent material density.

Compliance Tracking

Full traceability from raw ductile iron to final bitumen painting.

Load Testing

Rigorous pressure testing to validate D400 rating before shipment.

Logistics Hub

Efficient distribution networks for global delivery of heavy metal products.

After-Sales Support

Technical guidance for installation and long-term maintenance planning.

Investment Return Comparison

FeatureStandard Grey IronDuctile Iron (JRC14)Value Impact
DurabilityModerateHigh (Impact Resistant)Lower Replacement Cost
Corrosion LifeLowHigh (Bitumen Coated)Reduced Maintenance
Load RatingC250 typicalD400 CertifiedHigher Safety Margin
Weight EfficiencyHeavier/BrittleOptimized StrengthEasier Handling
Life Cycle CostHigher (Frequent repair)Lowest (Long-term)Better ROI

Frequently Asked Questions

Q: What does the D400 specification mean for manhole covers?

D400 indicates that the cover is designed to withstand a test load of 400kN, making it suitable for areas where cars and trucks may drive, such as main roads and parking lots.

Q: Why is bitumen painting used on the JRC14 model?

Bitumen painting creates a waterproof and corrosion-resistant layer that protects the ductile iron from salts, chemicals, and moisture in the soil, significantly extending the product's life.

Q: How does ductile iron differ from standard cast iron?

Ductile iron contains nodular graphite, which allows the material to bend or deform slightly under pressure rather than cracking, providing much higher strength and durability.

Q: Can these covers be used for telecom and electrical manholes?

Yes, while the JRC14 is a general-purpose heavy-duty cover, our product line includes specialized Telecom Manhole Covers designed specifically for cable and utility management.

Q: What is the typical lead time for bulk orders of metal gratings and covers?

Lead times vary by quantity and specification, but our optimized manufacturing platform ensures efficient production and timely global shipping.

Q: Do you provide custom dimensions for specialized infrastructure projects?

Yes, we specialize in various metal products including drainage gratings and steel frame covers, and can provide customized specifications to meet your project's engineering needs.

Ready to Upgrade Your Infrastructure with JRC14?

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