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Large Diameter PVC Utility Duct – 315 mm (12″) – DB-120
Large Diameter PVC Utility Duct – 315 mm (12″) DB‑120
Heavy-Duty Direct Burial Conduit for Power, Telecom & Fiber Networks in KSA & Gulf Region
Technical Specifications
| Specification | Details |
|---|---|
| Nominal Diameter | 315 mm (12″) |
| Material | High-grade rigid PVC |
| Type | DB‑120 Heavy Duty, Direct Burial |
| Standard Lengths | 2 m, 3 m, 6 m |
| Joint Type | Solvent Weld or Mechanical Couplers |
| Wall Thickness | DB‑120 Heavy Duty specification |
| Color | Grey (Standard) |
| Operating Temp | −10 °C to +60 °C |
| Compliance | ASTM, NEMA, IEC, UL/ETL (optional) |
| Expected Service Life | 30–50+ years |
| Applications | Power, Telecom, Fiber Optic, Utility Networks |
Key Features and Benefits
- Heavy-Duty Wall Construction: Prevents soil pressure, mechanical impacts, and environmental stress.
- Large 315 mm Diameter: Allows for multiple runs of high-capacity cables.
- Smooth Interior Surface: Minimizes friction and provides a safe pulling path for cables.
- Corrosion & Chemical Resistance: Able to withstand saline, alkaline, and severe Gulf soils.
- Non-Conductive Material: Guarantees electrical safety for any installation.
- Direct Burial Ready: No necessity for concrete encasement.
- Lightweight & Easy Handling: Installation time is shortened and labor costs are decreased.
- Long Lifecycle: 30–50+ years of dependable performance.
- Standardized Compliance: Quality assurance with ASTM, IEC, and NEMA standards met.
- Future-Ready Design: No problem for network increases and multiple cable installations.
Applications Across Sectors
Residential Infrastructure: Underground cabling for electricity and telecom.
Commercial Projects: Office buildings, malls, and business centers.
Industrial Facilities: Factories, refineries, and warehouses with high-capacity cable needs.
Municipal Utilities: Smart city networks, street lighting, traffic systems, and public utilities.
Telecom & Fiber Networks: Large-scale fiber optic and communication networks.
Why PVC DB‑120 is Ideal for Gulf Region
- Heat Resistant: Even in the most extreme desert temperatures, the material remains intact.
- Saline Soil Resistant: The material does not degrade due to coastal soil.
- High Mechanical Strength: Cables are safe from soil and superficial pressure due to this strength.
- Lightweight Design: Easy to handle and labor costs are lower.
- Long-Term Durability: Guarantees 30–50+years of uninterrupted service with almost no maintenance.
Installation Guide
Site Assessment & Trench Design: Determine route, depth, and spacing for duct installation.
Excavation: Clear rocks and debris to ensure a smooth trench base.
Bedding Preparation: Use sand or fine soil for proper duct support.
Laying Duct Sections: Align sections with correct slope and straightness.
Jointing: Use solvent weld or mechanical couplers for secure connections.
Cable Pulling: Apply lubricants to reduce friction and prevent cable damage.
Backfilling: Layered compaction secures ducts and protects cables.
Warning Tape Installation: Place above ducts for future excavation safety.
Accessories & Fittings
- Solvent Weld & Mechanical Couplers: For reliable junctions.
- Elbows (45° & 90°): Gradual and easy changes of direction.
- Pulling Eyelets: Assist in cable installation.
- Warning Tapes: Mark duct position for safe digging.
- Spacer Clips & Support Saddles: Ensure tolerance and distance are kept.
Performance in Harsh Conditions
- Ultra resistant to extreme heat, sandy soil, and saline conditions.
- Cable pulling is safe because of the smooth interior.
- Soil pressure and surface load are no match for the mechanical protection provided.
- For years of safe operation in Gulf conditions, long-term reliability is the key factor.
Maintenance & Inspection
- Periodic examination of connections, fittings, and warning tapes.
- The maintenance burden is slight as a result of long-lasting PVC material.
- Preserve as-built documents for prospective upsizing or mending.
Cost Efficiency & Lifecycle Advantages
Direct burial eliminates concrete encasement costs.
Lightweight construction allows fast installation.
Long service life ensures decades of reliable operation.
Supports future cable expansions without additional excavation.
Comparison: DB‑120 vs DB‑100 vs DB‑60
| Feature | DB‑120 315 mm | DB‑100 315 mm | DB‑60 315 mm | Steel Conduit |
|---|---|---|---|---|
| Wall Strength | Very High | High | Medium | Very High |
| Direct Burial | Yes | Yes | Limited | Yes |
| Corrosion Resistance | Excellent | Excellent | Good | Poor |
| Installation Cost | Medium | Medium | Low | High |
| Service Life | 30–50+ yrs | 30–50 yrs | 20–30 yrs | 15–25 yrs |
Conclusion
The Large Diameter PVC Utility Duct – 315 mm DB‑120 provides heavy-duty mechanical protection, corrosion resistance, and long-term durability for high-capacity underground cable installations. Its large diameter, DB‑120 classification, and direct burial capability make it suitable for residential, commercial, industrial, and municipal projects across the KSA and Gulf region.
By choosing the DB‑120 315 mm duct, you ensure cost-efficient, reliable, and future-ready infrastructure, capable of supporting modern power, telecom, and fiber optic networks under harsh environmental conditions.
Frequently Asked Questions (FAQs)
1. What is the Large Diameter PVC Utility Duct 315 mm DB‑120 used for?
It is used for high-capacity underground cable installations, including power, telecom, and fiber optic networks.
2. Can it be buried directly without concrete?
Yes. The DB‑120 heavy-duty construction allows direct burial.
3. Difference between DB‑120 and DB‑100 ducts?
DB‑120 has thicker walls and higher mechanical strength, ideal for larger loads and harsh environments.
4. Is PVC DB‑120 315 mm suitable for Gulf climates?
Yes. Resistant to high temperatures, sandy soils, and saline conditions.
5. Can fiber optic and telecom cables be installed?
Yes. Smooth interior ensures easy and safe cable pulling.
6. What lengths are available for DB‑120 315 mm ducts?
2 m, 3 m, and 6 m; joints can be made using solvent weld or mechanical couplers.
7. Is PVC DB‑120 electrically safe?
Yes. PVC is non-conductive, ensuring safety.
8. Compatible fittings and accessories?
Elbows, couplers, pulling eyelets, warning tapes, and spacers.
9. Expected service life?
Typically 30–50+ years, depending on soil and installation quality.
10. Compliance with international and Gulf standards?
Yes. Meets ASTM, NEMA, IEC, and optional UL/ETL certifications.