Hume pipe, also known as cement pipe or concrete pipe, are widely used in various construction projects for drainage and sewerage systems. Hume pipe come in different classes, denoted as NP2, NP3 and NP4, each with its own specific characteristics and application. Let’s explore the differences between these classes in the table below:
S.no. |
Characteristics |
NP2 |
NP3 |
NP4 |
1. |
Strength |
Light |
Medium |
Heavy |
2. |
Durability |
Moderate
|
High |
Very High |
3. |
Cost |
Least expensive |
More expensive |
Most expensive |
4. |
Wall thickness |
Thin |
Thick |
Same as NP3 |
5. |
Load Capacity |
Light |
Medium |
Heavy |
6. |
Installation |
Standard |
Standard |
Standard |
7. |
Inner Diameter |
Same |
Same |
Same |
8. |
Reinforcement | Minimum reinforcement | Moderate reinforcement | Maximum reinforcement |
9. |
Outer Diameter |
Smallest |
Bigger |
Same as Np3 |
10. |
Application | Residential drainage system, Agricultural applications | Urban drainage system, Industrial application | Heavy duty application such as highways & railway drainage |
To know more about specification of NP2, NP3 and NP4 class Hume pipe, you can refer to our blogs-
RCC NP2 Pipe Specification
RCC NP3 Pipe Specification
RCC NP4 Pipe Specification
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