NP4 RCC Hume Pipe

About NP4 RCC Hume Pipe

Reinforced Cement Concrete RCC Spun Pipes Description

Reinforced Cement Concrete RCC spun pipes are high strength concrete pipes reinforced with steel and manufactured using a centrifugal spinning process. They are widely used for underground drainage sewerage irrigation and culvert systems due to their durability and load bearing capacity.

Key Features
High strength Steel reinforcement provides excellent resistance to internal pressure and external loads
Dense structure The spinning process removes excess water making the concrete compact and less porous
Durability Resistant to corrosion weathering and moderate chemical attack
Leak proof joints Designed with spigot and socket or collar joints for tight connections
Long service life Typically lasts several decades with minimal maintenance

Manufacturing Process
Mould preparation Steel moulds are cleaned and assembled
Reinforcement placement Steel cages are placed inside the mould
Concrete filling Concrete mix is poured into the mould
Spinning The mould rotates at high speed distributing concrete evenly and compacting it
Curing Pipes are cured by water or steam curing to gain strength
Demoulding and finishing Pipes are removed and inspected

Types of RCC Spun Pipes
Non pressure pipes NP classes NP2 NP3 NP4 used for drainage and sewer systems
Pressure pipes P classes designed to carry water under pressure such as irrigation pipelines

Sizes
Diameter typically ranges from 150 mm to 2000 mm or more
Length usually 2 to 2.5 meters per pipe depending on manufacturer

Applications
Sewerage and drainage systems
Stormwater disposal
Irrigation canals and water supply
Road culverts and cross drainage works
Industrial effluent disposal

Advantages
Strong and rigid structure
Economical for large scale projects
Fire resistant and environmentally friendly
Can withstand heavy soil and traffic loads

Limitations
Heavy weight requires machinery for handling
May crack if not handled properly
Jointing requires proper sealing to prevent leakage

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