BERLIA FR PLB DUCT (Flame Retardant Permanently Lubricated HDPE Duct)

BERLIA FR PLB Duct is a specialized Flame Retardant Permanently Lubricated HDPE Duct as per UL 94 V0, V1 V2 levels, designed for safe installation and protection of optical fibre cables in areas where fire resistance is critical. These ducts are manufactured using specially formulated flame-retardant HDPE compounds with a permanently lubricated inner layer to ensure smooth cable blowing and enhanced fire safety.

FR PLB ducts are primarily used in telecom, railway, metro, tunnel, airport, industrial, and underground infrastructure projects where the risk of fire exposure is higher than normal outdoor telecom installations.

Construction of FR PLB Duct

• Outer Layer: Flame retardant HDPE compound
• Inner Layer: Permanently lubricated / silicon-coated layer
• Construction: Co-extruded dual-layer duct
• Identification: Color coding and marking as per project specifications

The inner lubricated layer minimizes friction during fibre optic cable blowing, while the outer FR layer reduces flame propagation.

Features of FR PLB Duct

• Flame retardant properties
• Permanently lubricated inner surface
• Low friction for easy OFC blowing
• High impact and crush resistance
• UV and weather resistant
• Corrosion and chemical resistant
• Excellent Environmental Stress Crack Resistance (ESCR)
• Long service life
• Lightweight and flexible

Key Applications

BERLIA FR PLB Duct as per EIL Standard

FR PLB Duct (Flame Retardant Permanently Lubricated HDPE Duct) as per EIL (Engineers India Limited) standards is generally specified for underground and above-ground telecom/OFC cable protection in refinery, petrochemical, pipeline, industrial, and hazardous installations where enhanced fire safety is required. EIL specifications typically align with TEC standards for PLB ducts, with additional requirements for flame retardancy, industrial durability, and project-specific performance criteria. It consists of UL 94 V2 level, wall thickness of Duct should be 3.7mm (minimum)

 BERLIA Anti Rodent PLB Duct

Anti Rodent PLB Duct (Permanently Lubricated HDPE Duct) is a specially engineered telecom duct designed to protect optical fibre cables from rodent attacks and physical damage in underground installations. These ducts are manufactured using premium HDPE material with anti-rodent additives or protective compounds to discourage gnawing by rats, squirrels, and other rodents.

The anti-rodent property is achieved through specialized additives or modified polymer compositions designed to resist rodent biting.

The duct also incorporates a permanently lubricated inner layer, enabling smooth blowing or pulling of optical fibre cables over long distances with reduced friction.

Anti Rodent PLB ducts are widely used in telecom, railways, metro, smart city, refinery, industrial, and underground communication infrastructure where rodent damage poses a significant operational risk.

BERLIA Anti Termite PLB Duct

BERLIA Anti Termite PLB Duct (Permanently Lubricated HDPE Duct) is a specially developed HDPE telecom duct designed to provide enhanced protection against termite infestation in underground cable installations. These ducts are manufactured with special anti-termite additives or protective compounds that help resist termite attacks and prevent deterioration of underground communication infrastructure.

The duct incorporates a permanently lubricated inner layer, allowing smooth blowing or pulling of optical fibre cables with reduced friction and improved installation efficiency.

Anti Termite PLB ducts are commonly used in telecom, railways, industrial plants, smart city projects, refineries, and underground communication networks installed in termite-prone regions.

BERLIA Copper Tracer PLB Duct

Copper Tracer PLB Duct (Permanently Lubricated HDPE Duct with Copper Tracer Wire) is a specialized telecom duct designed with an integrated copper tracer wire to enable easy underground route detection and cable locating after installation. The duct combines the advantages of a standard PLB duct with the added functionality of underground utility traceability.

The permanently lubricated inner layer ensures smooth blowing or pulling of optical fiber cables, while the embedded copper tracer wire helps in locating buried duct routes using electronic cable locators without excavation.

Copper tracer PLB ducts are widely used in telecom, smart city, railway, oil & gas, refinery, utility, and infrastructure projects where underground route identification and maintenance are critical.

BERLIA Spiral Ribbed PLB Duct

Spiral Ribbed PLB Duct (Permanently Lubricated HDPE Duct) is a specially designed telecom duct featuring a spirally ribbed outer surface and a smooth permanently lubricated inner layer for superior mechanical performance and efficient optical fiber cable installation.

The spiral ribbed outer structure provides enhanced ring stiffness, crush resistance, and load-bearing strength, making it suitable for heavy-duty underground telecom and OFC installations. The inner lubricated layer reduces friction, enabling smooth blowing of optical fiber cables over long distances.

Spiral ribbed PLB ducts are widely used in telecom networks, highways, railways, metros, industrial zones, refineries, airports, and smart city projects where higher underground protection is required.

 BERLIA Conductive PLB Duct (link)

Conductive PLB Duct (Permanently Lubricated HDPE Duct) is a specialized HDPE telecom duct designed with electrically conductive properties to safely dissipate static electricity and provide controlled electrical conductivity in sensitive underground installations. These ducts are generally manufactured using conductive carbon-loaded HDPE compounds along with a permanently lubricated inner layer for smooth fiber optic cable blowing.

Conductive PLB ducts are primarily used in hazardous industrial areas, refineries, petrochemical plants, oil & gas facilities, explosive environments, and critical communication infrastructure where static charge buildup can create safety risks.

The conductive outer layer allows safe discharge of electrostatic charges generated during cable installation or operation.

Features of Conductive PLB Duct

• Electrically conductive properties
• Permanently lubricated inner surface
• Low friction for OFC cable blowing
• Static charge dissipation
• High impact and crush resistance
• Excellent chemical resistance
• UV stabilized
• Corrosion resistant
• Long service life
• Suitable for hazardous areas

 BERLIA Triple Layered PLB Duct

Triple Layered PLB Duct (Permanently Lubricated HDPE Duct) is an advanced telecom duct manufactured with a three-layer co-extruded structure to provide enhanced mechanical strength, durability, and superior optical fiber cable installation performance. These ducts are specially designed for demanding underground telecom and OFC applications where higher protection and long-term reliability are required.

The duct typically consists of an outer protective layer, a middle reinforcement layer, and an inner permanently lubricated layer, ensuring smooth cable blowing with excellent resistance to environmental and mechanical stress.

Triple layered PLB ducts are widely used in telecom networks, smart city projects, railways, metros, highways, refineries, industrial plants, and critical communication infrastructure.

 Advantages of BERLIA Triple Layered PLB Duct

BERLIA Inner Ribbed PLB Duct

BERLIA Inner Ribbed PLB Duct (Permanently Lubricated HDPE Duct) is a specialized HDPE telecom duct designed with longitudinal ribs on the inner surface to reduce cable contact area and friction during optical fiber cable installation. The duct also incorporates a permanently lubricated inner layer, enabling smoother and longer-distance cable blowing performance.

The ribbed internal structure improves airflow efficiency and minimizes drag on optical fiber cables, making inner ribbed PLB ducts ideal for long-distance OFC installations and high-performance telecom networks.

Inner ribbed PLB ducts are widely used in telecom backbone networks, FTTH, smart cities, highways, railways, metros, industrial communication systems, and long-distance OFC routes.