An underground drainage system has one job: move wastewater and stormwater safely away from the property. But because most of the system stays buried, problems with pipe selection, jointing or installation can be difficult and expensive to correct later.
That is why you should choose UGD pipes & fittings as a complete system, not as the only important component.
Designed for buried, non-pressure gravity drainage, Sudhakar UGD systems are used for domestic soil and waste discharge, storm water and industrial effluents.
What are UGD pipes & fittings?
UGD pipes are designed for underground drainage and sewerage systems where wastewater moves by gravity rather than under pressure.
Sudhakar PVC-U UGD pipes are manufactured to IS 15328 and are available in sizes from 110 mm to 315 mm. The range includes different stiffness classes to suit varying underground installation requirements.
Fittings complete the system by helping the pipeline change direction, connect branches or provide access where required.
How do UGD pipes support wastewater flow?
A drainage line needs to maintain a clear and consistent flow path.
Sudhakar UGD pipes have a smooth internal surface and uniform wall construction, which supports wastewater flow through the system. A smoother bore can also reduce places where material may catch compared with a rough internal surface.
Performance, however, also depends on correct slope, proper bedding and good installation. Even the best UGD pipes and fittings cannot compensate for an incorrectly laid drainage line.
Sealring or Selfit: what is the difference?
Sudhakar UGD pipes are available with two jointing systems:
| Jointing system | How it works | Practical consideration |
| Sealring | Uses a grooved socket with a PP-reinforced elastomeric rubber ring | Allows straightforward assembly while maintaining a sealed joint |
| Selfit | Uses a sliding socket with solvent cement jointing | Creates a fixed, bonded connection |
Both systems are designed for underground drainage applications. The choice should depend on project requirements, site conditions and the installation method you choose.
How to choose UGD pipes for a project
Knowing how to choose UGD pipes involves more than selecting a diameter.
Start with these four points:
- Application: Is the system carrying domestic waste, storm water or industrial effluent?
- Pipe diameter: Sudhakar UGD pipes are available from 110 mm to 315 mm.
- Ring stiffness: The range includes SN2, SN4 and SN8 classes, corresponding to different SDR values and underground load requirements.
- Jointing system: Choose between Sealring and Selfit based on the installation design and site requirements.
The required diameter and stiffness class should be determined according to flow requirements, burial conditions and project specifications rather than selecting purely by size.
Which fittings are used in a UGD system?
A complete underground line usually needs more than a straight pipe.
Sudhakar UGD fittings include:
- Couplers for connecting pipe sections
- 87.5° and 45° bends for changes in direction
- Tees and Y fittings for branch connections
- Cleansing pipes for access
- Reducers where the line changes from one diameter to another
UGD rubber ring and solvent cement jointing fittings are available in 110 mm and 160 mm sizes, with the exact fitting size depending on the component. For example, the reducer is available in 160 x 110 mm.
Planning the fittings before pipe installation helps avoid unnecessary changes or mismatched components on site.
What should you look for in the best UGD pipes and fittings?
A dependable underground system is not just about choosing a good pipe. The fittings, jointing method and installation conditions matter just as much.
A few things to keep in mind:
- The pipe should meet the required standard for the application
- Pipe size needs to match the expected flow
- Burial depth and ground conditions will affect the stiffness class you need
- Sealring or Selfit should be chosen based on the site and installation method
- Fittings should match the pipe range properly
- Trench preparation, bedding and slope need to be right before installation begins
This gives the entire drainage line a better chance of performing as intended once it is buried.
Sudhakar UGD pipes & fittings
Sudhakar PVC-U UGD pipes are manufactured to IS 15328 and are available from 110 mm to 315 mm in SN2, SN4 and SN8 stiffness classes. Pipes are supplied in standard lengths of 3 and 6 metres. Matching rubber ring and solvent cement fittings are available in 110 mm and 160 mm for underground drainage, domestic waste, storm water and industrial effluent applications.
With both Sealring and Selfit options, the range allows project teams to select the jointing method, pipe size and fittings according to the requirements of the drainage system.
Frequently asked questions
What sizes are Sudhakar UGD pipes available in?
The range covers 110 mm to 315 mm.
What is the difference between Sealring and Selfit UGD pipes?
Sealring uses an elastomeric rubber ring joint, while Selfit uses solvent cement jointing.
What are UGD pipes for sewerage systems used for?
They are designed for buried, non-pressure gravity drainage carrying domestic waste, storm water and suitable industrial effluents.
How do I choose the right UGD pipe?
Consider the required diameter, ring stiffness, application, burial conditions and jointing method.
What fittings are available for Sudhakar UGD systems?
The range includes couplers, bends, tees, Y fittings, cleansing pipes and reducers in relevant sizes.
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