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PVC DUCT PIPE SPECIFICATIONS

D56 Duct Pipe Specification for Saudi Arabia

Full technical dimensions, wall thickness, and length specifications for D56 uPVC duct pipe, manufactured by 4B Factory to British Standard BS 3506 for telecom, power, and fiber-optic cable protection projects across Saudi Arabia.
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What Is D56 Duct Pipe?

D56 duct pipe is a small-bore unplasticized PVC (uPVC) duct manufactured to British Standard BS 3506, used to protect and route telecom, fiber-optic, and low-voltage power cables underground or within building risers. With a 56.5mm outside diameter, it is the compact companion size to 4B Factory’s D54 duct pipe, purpose-built for projects where cable bundles are smaller or routing space is limited.
Every D56 duct pipe leaving our Al-Kharj facility is produced to consistent wall thickness and outside-diameter tolerances, giving contractors, telecom operators, and infrastructure engineers a dependable fit with standard couplers, fittings, and duct-bank layouts used across Saudi Arabia.

D56 Duct Pipe Technical Specifications

Reference dimensions for D56 uPVC duct pipe manufactured by 4B Factory.
Specification
D56 Value
Nominal Size
D56
Outside Diameter (OD)
56.5 mm ± 0.2 mm
Wall Thickness
3.25 mm ± 0.2 mm
Actual Length
3.07 m
Effective Length
3.0 m
Internal Diameter at Spigot
50 mm
Socket Length
70 mm
Material
Unplasticized PVC (uPVC)
Manufacturing Standard
British Standard BS 3506

Specifications are provided for reference and are subject to standard manufacturing tolerances. Please confirm exact dimensions and certification requirements with our technical team before placing an order.

Where D56 Duct Pipe Is Used

D56’s smaller bore and lighter weight make it the preferred choice wherever cable counts are lower or routing space is tight.
✓ Telecom and fiber-optic cable ducting for last-mile and access networks
✓ Low-voltage power cable protection in urban and industrial areas
✓ Building and riser cable containment for MEP and electrical contractors
✓ Street lighting and traffic signal cabling along roadways
✓ CCTV and smart-city cable networks for municipal projects

Related Duct Pipe Sizes & Products

D54 Duct Pipe Specification

The larger companion size to D56 — full technical dimensions for high-capacity cable duct banks.

uPVC Duct Pipes Overview

Browse the full uPVC duct pipe range manufactured by 4B Factory for telecom and power infrastructure.

PVC Pipe Certificates & Test Reports

Download quality certificates and lab test reports for our PVC and uPVC pipe products.

Why Choose 4B Factory for D56 Duct Pipe

✓ Saudi-manufactured to international BS 3506 standards
✓ Consistent wall thickness and outside-diameter tolerance on every batch
✓ Certified quality — test reports and certificates available on request
✓ Reliable bulk supply for contractors and telecom infrastructure projects

✓ Direct technical support for project specification and ordering

Frequently Asked Questions

D54 and D56 both follow BS 3506, but D56 has a smaller 56.5mm outside diameter versus D54’s 96.5mm. D56 suits lighter cable bundles and tighter routing spaces, while D54 handles higher-capacity duct banks and larger cable counts.
D56 duct pipe is manufactured to British Standard BS 3506, the established specification for unplasticized PVC pipes used in cable ducting across Saudi Arabia and the wider region.
Yes. D56’s 50mm internal diameter at the spigot comfortably accommodates fiber-optic cable bundles and is widely used for last-mile and access-network duct runs.
D56 duct pipe has an actual length of 3.07 meters and an effective (usable) length of 3.0 meters after accounting for the socket joint.
Yes. Test reports and quality certificates for D56 duct pipe are available on request — see our PVC Pipe Certificates and Test Reports page for details.

Ready to Order D56 Duct Pipe?

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