CNG manufactures reliable, durable, and high-quality transition couplings for connecting pipes of different sizes and materials.
These grooved couplings are designed specifically for engineering projects, municipal systems, industrial pipelines, and plumbing installations where pipe dimensions or materials are mismatched.
With reinforced rubber sleeves and premium stainless-steel clamps, CNG transition couplings provide a strong, leak-proof connection even under demanding operating conditions. For contractors, distributors, and project purchasers who require stable bulk supply, CNG offers consistent quality, competitive factory pricing, and fast delivery.
Supports transitions such as:
6" → 4"
5" → 3"
4" → 2"
Custom size combinations for special systems
Ideal for system upgrades, pipeline modifications, and retrofits.
Easily connects pipes made from:
PVC | HDPE | Cast Iron | Ductile Iron | Stainless Steel | Copper | ABS | Concrete
Perfect for mixed-material pipeline environments.
Excellent chemical and corrosion resistance
Suitable for potable water, wastewater, industrial liquids, and oil-containing media (NBR)
Long service life with superior sealing performance
High tensile strength
Corrosion-proof, suitable for buried and outdoor use
Heavy-duty clamp options for high-pressure systems
Just place the coupling and tighten the clamps.
Significantly reduces labor, installation time, and total project cost.
The flexible structure allows the system to absorb:
Pipe misalignment
Thermal expansion & contraction
Ground movement
Pump and equipment vibration
Ensuring long-term leak prevention.
| Item | Specification |
|---|---|
| Product | Transition Coupling for Different Pipe Sizes |
| Sizes | Customized for any multi-diameter connection |
| Rubber Material | EPDM / NBR |
| Clamp Material | SS304 / SS316 |
| Working Pressure | 6–10 bar (heavy-duty version available) |
| Temperature Range | -20°C to +120°C |
| Standards | ASTM / EN / DIN / ISO |
| Custom Options | Size range, band width, heavy-duty clamps, OEM/ODM |
CNG transition couplings are widely used in:
Municipal water supply & sewer systems
Drainage, stormwater, and wastewater plants
Industrial piping & chemical transport lines
Building plumbing & renovation projects
HVAC pipelines & equipment connections
Mining, power plants, and heavy industry facilities
Pipeline repair, emergency maintenance, and upgrades
Wherever different pipe sizes or materials are used, CNG provides the ideal transition solution.
Over 10 years of specialized production in pipeline connection solutions
Strict material screening and pressure testing for every batch
Global supply capability with fast production cycle
Professional OEM/ODM customization for large projects
Factory-direct pricing for distributors and engineering contractors
Export experience to North America, Europe, Middle East, and Southeast Asia
CNG ensures your project benefits from leak-proof performance, long-term durability, and cost-effective installation.
For large-volume procurement, project specifications, or customized size combinations, contact CNG today.
We provide technical consultation, datasheets, and free samples for qualified buyers.
CNG – Your Reliable Manufacturer of Flexible Pipeline Connection Solutions.
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