Division 05 • Power Grids, Highway Ducting & Telecom OFC

Cable & Electrical Protection Systems

Double Wall Corrugated (DWC) HDPE pipes and solid wall conduits engineered to shield extra-high-voltage (EHV) power cables, highway smart lighting, railway signaling, and high-speed optical fibre networks from mechanical crushing and subterranean moisture.

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SHRIJI DWC Cable Protection Pipe Installation

450N & 750N Ring StiffnessWithstands heavy vehicular wheel loads

Low Friction Inner BoreEffortless long-distance cable winching

Dielectric Non-ConductiveZero stray current electrolytic corrosion

Fast Snap-Fit CouplersWater-tight elastomer snap jointing

Power & Data Protection

Underground Conduits & Sub-Ducts

Specified across national expressways, metro rail infrastructure, power generation stations, and data center cable routing.

Ref: IS 16205 Part 24 / EN 61386-24

Double Wall Corrugated (DWC) HDPE Cable Protection Pipes

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Co-extruded structural wall conduit featuring a corrugated annular outer surface for maximum beam and ring stiffness, paired with an ultra-smooth cylindrical inner liner. Specifically designed to replace brittle RCC pipes and hazardous GI conduits in underground cable trenching.

Key Engineering Advantages:

✓ Exceptional Compression Strength: Available in 450N (Normal Duty) and 750N (Heavy Duty) classes to withstand heavy highway highway vehicular wheel loads.
✓ Pre-Inserted Anti-Snap Draw Wire: Supplied with durable nylon/PP pull pilot line inside to accelerate on-site cable winching.
✓ Moisture & Chemical Seal: EPDM rubber ring socket joint stops ground water ingress, protecting critical electrical splices from flood inundation.

Available Sizes: 40/32mm to 200/175mm (OD/ID)Stiffness Classes: 450 N (Type 450) & 750 N (Type 750)Supply Forms: 6m Straight Bars & 50m / 100m Coils

Ref: IS 14930 Part 2 / TEC Specifications

Permanently Lubricated (PLB) HDPE Telecom Ducts

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Engineered for optical fibre cable (OFC) blowing and pulling along high-speed broadband corridors, 5G towers, and inter-city telecom backbones. Features an internal solid layer of permanent silicone lubricant co-extruded with virgin HDPE resin to minimize dynamic friction.

Key Engineering Advantages:

✓ Permanent Solid Lubrication: Silicone layer does not wash away, evaporate, or react with cable outer jacket compounds over 30+ years.
✓ High Cable Jetting Distance: Low friction allows pneumatic cable blowing machines to install up to 2,000 metres in a single continuous push.
✓ Crush & Impact Resistance: Protects delicate glass optical fibres from rock impingement and soil compaction during mechanical backfilling.

Standard Sizes: 32/26mm, 40/33mm, 50/42mm (OD/ID)Color Coding: Green, Orange, Blue, Brown for multi-duct identificationPackaging: 500m & 1,000m continuous wooden/steel drums

Accessories & Fittings

Snap-Fit Couplers, Rubber Rings & End Sealing Plugs

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Complete accessory system to guarantee pipeline integrity, alignment, and sand-tight sealing in underground cable trenches. Engineered for rapid snap assembly without specialized adhesive chemicals.

System Accessories Available:

✓ Profiled DWC Snap Couplers: Ribbed couplers lock onto outer pipe corrugations preventing separation during soil compaction.
✓ Moulded EPDM Sealing Rings: High-rebound elastomeric gaskets deliver IP67 water and grit tightness.
✓ Bell Mouth Terminating Adaptors: Smooth flanged entries at manhole chambers prevent cable jacket scraping during pulling.
✓ Tapered End Plugs: Seals vacant conduits against silt and rodent entry before cable installation.

Compatibility: 40mm to 200mm DWC SystemsMaterial: Virgin HDPE / Engineered PP / EPDMTool-Free Jointing

Technical Comparison

Cable Protection Specification Matrix

Engineering benchmarks comparing DWC HDPE against legacy conduit materials.

System Type	Material Construction	Standard Ref	Common Diameters	Crush Resistance	Primary Sector
DWC HDPE Cable Conduit	Dual Wall High-Density PE	IS 16205 P24	50/38mm to 200/175mm	450 N & 750 N Compression	Power Utilities, Expressways, Metros
PLB Telecom OFC Duct	HDPE with Co-Extruded Silicone	IS 14930 P2 / TEC	32/26mm to 50/42mm	High Ring Stiffness (≥ 450 N)	Telecom Backbones, 5G Fiber Grid
DWC Snap Couplers & Seals	Moulded HDPE + EPDM Gasket	IS 16205 P24	Matches pipe OD	Water & Silt Tight (IP 67)	Underground Trench Joints

Technical Brochure

Download the DWC Conduit Engineering Guide

Access installation trench depth charts, bending radii limits, pulling tension formulas, and Indian standard compliance documentation.

Download DWC Brochure PDF (5.6 MB)Master Product Catalogue (18.5 MB)Request Project Tender Pricing