IS 458 certified NP3 class RCC hume pipe for heavy-duty urban drainage, road culverts and sewerage networks. The most commonly specified class for municipal and highway projects.
Himalaya RCC Hume Pipe NP3 is the most widely specified class for urban drainage infrastructure and highway culvert applications across India. NP3 class pipes meet IS 458 requirements for heavy-duty external loads including road crossings under standard vehicular traffic and moderate burial depths. The heavier wall section compared to NP2 provides the additional structural capacity required for municipal roads, urban sewerage networks and NHAI state highway culverts. Produced by the centrifugal spinning process using M30 grade concrete with HYSD bar reinforcement. Available in 150mm to 2200mm diameters covering the full range of urban and highway drainage requirements. Spigot-and-socket rubber ring joints ensure watertight installation throughout the drainage system.
| Standard | IS 458 |
| Class | NP3 - Non-Pressure Heavy Duty |
| Manufacturing | Centrifugal Spinning Process |
| Diameter Range | 150 mm to 2200 mm |
| Standard Length | 2.5 m |
| Joint | Spigot & Socket with Rubber Ring |
| Concrete Grade | M30 |
| Reinforcement | As per IS 458 |
| Wall Thickness | As per IS 458 |
| Test Pressure | 0.07 N/mm² hydrostatic |
RCC Hume Pipes
IS 458 certified NP2 class RCC hume pipe for light-duty drainage and agricultural irrigation. Available in 100mm to 1200mm diameters with standard 2.0 m & 2.5 m spigot-and-socket joints.
RCC Hume Pipes
IS 458 certified NP4 class extra heavy-duty RCC hume pipe for major highway culverts, railway crossings and high-load buried applications. Maximum wall thickness and load capacity.
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