Rigid grooved coupling · ductile iron · AWWA C606 grooves · UAE stock
A rigid grooved coupling joins two grooved pipe ends with a two-piece ductile iron housing and a pressure-responsive gasket. Once the bolts are tightened it behaves like a welded or flanged joint, with no hot work.
Checked stock, standard-compliant
Full sizes, ratings & materials
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The coupling housing has keys that drop into grooves rolled or cut into each pipe end. A C-shaped EPDM gasket sits over the joint and is pushed harder onto the pipe as line pressure rises. Rigid designs have angled or offset bolt pads that clamp the keys tightly into the grooves, removing axial and angular movement, so the pipe can be supported like a welded system. Flexible couplings, by contrast, allow some deflection.
Hamza Fasteners stocks rigid grooved couplings in painted ductile iron from 1" to 12" for steel pipe to ASME B36.10 ODs. They are used on fire sprinkler mains, risers, pump rooms, chilled water and condenser water systems in UAE projects. UL/FM listed options are available on request. Send sizes and quantities for a quote from Dubai.
Reference data for Rigid Grooved Coupling. Confirm exact size, rating and material for your order with our team.
This datasheet shows representative sizes for reference only. Rigid Grooved Coupling is supplied in the full range of sizes, ratings and materials — not a single option. Tell us what you need and we will confirm exact availability, specification and price.
| NPS | DN | Pipe OD (mm) | Pipe OD (in) |
|---|---|---|---|
| 1" | DN25 | 33.4 | 1.315 |
| 1-1/2" | DN40 | 48.3 | 1.900 |
| 2" | DN50 | 60.3 | 2.375 |
| 2-1/2" | DN65 | 73.0 | 2.875 |
| 3" | DN80 | 88.9 | 3.500 |
| 4" | DN100 | 114.3 | 4.500 |
| 6" | DN150 | 168.3 | 6.625 |
| 8" | DN200 | 219.1 | 8.625 |
| 10" | DN250 | 273.0 | 10.750 |
| 12" | DN300 | 323.9 | 12.750 |
| Product Type | Rigid grooved coupling |
|---|---|
| Material | Ductile iron ASTM A536 Gr 65-45-12 |
| Gasket | EPDM Grade E; nitrile on request |
| Bolts | Carbon steel track bolts & nuts, plated |
| Grooves | AWWA C606 roll / cut groove |
| Pressure | Typically up to 300 PSI (20.7 bar); check listing |
| Size Range | 1" – 12" |
Mains and risers
HVAC plant rooms
Fire and booster pumps
Vertical risers
Plant pipework
Process cooling lines
Stocked in Deira, Dubai and delivered fast across the region. Wherever you are building, we supply in stock and project quantities.
Hamza Fasteners is a trusted Rigid Grooved Coupling supplier in Dubai and across the United Arab Emirates — Abu Dhabi, Sharjah and Ajman — with regular export supply to Saudi Arabia (Riyadh, Jeddah, Dammam), Qatar (Doha), Kuwait City, Oman (Muscat) and key East and West African markets including Tanzania (Dar es Salaam), Kenya (Nairobi and Mombasa), Nigeria (Lagos) and Ethiopia (Addis Ababa). Looking for a "Rigid Grooved Coupling supplier near me" or the best price in your city? Send us your requirement for a same-day quote.
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