Engineered to withstand extreme loads and harsh conditions, the 1000x1000mm ductile iron manhole cover (D/Tri design) sets the benchmark for safety and longevity in urban and industrial infrastructure. Certified to EN124 D400 (40-ton load capacity), this heavy-duty cover is designed for highways, ports, airport tarmacs, and industrial zones where high stress and corrosion resistance are critical.
Core Features
- Material: Grade 600-10 ductile iron with ≥93% iron, 3.5% carbon, and 2.8% silicon for superior tensile strength (≥600 MPa) and impact resistance.
- Design:
- Triangular D/Tri Bolt Pattern: Ensures even load distribution and tamper-proof security.
- 150mm Deep Frame: Reinforced edges prevent frame deformation under heavy axle loads.
- Anti-Slip Surface: Diamond-textured tread (Ra ≥60μm) meets ISO 1344 slip resistance standards.
- Protection:
- Zinc-Aluminum Coating (250g/m²) + epoxy primer for corrosion resistance in coastal/chemical environments.
- Optional V-Bio® Zinc for acidic soils (pH 2–12).
Performance & Compliance
| Parameter | Specification |
|---|---|
| Load Class | EN124 D400 (40-ton tested) |
| Dimensions | 1000x1000mm cover, 150mm frame depth |
| Weight | 180 kg (±5%) |
| Operating Temp | -40°C to 80°C |
| Certifications | EN124, ISO 2103, ASTM A48, BS 1247 |
Applications
- Highways: Withstands 40-ton truck traffic (tested in Germany’s A3 Autobahn).
- Airports: Resists jet fuel corrosion (compliant with ICAO Annex 14).
- Ports: Saltwater-resistant coating extends lifespan by 50% vs. standard covers.
Competitive Advantages
✅ Unmatched Load Capacity: 2x stronger than cast iron covers (tested to 60-ton overload).
✅ Quick Installation: Pre-aligned D/Tri bolts reduce setup time by 30%.
✅ Low Maintenance: 20-year warranty against structural failure.
FAQ
Q: Is this cover compatible with existing frames?
A: Yes, designed for universal 1000×1000 frames meeting EN124 standards.
Q: Can it handle freeze-thaw cycles?
A: Yes, the ductile iron microstructure prevents cracking in -40°C conditions.
Q: Lead time for custom coatings?
A: 6–8 weeks for orders >50 units. Stock available in EU and APAC hubs.
Global Success Case
Rotterdam Port Expansion (2023): 800+ units installed with 0% failure rate under 12-month stress testing.
