Thermoplastic Bends
Long-Radius Bends for Smooth Flow Transitions Through Directional Changes
DN 25 – DN 200
Size Range
Socket / Butt Weld
Connection
PP / PPH / PVDF
Material
PN 6 / 10 / 16
Pressure
Long-Radius Bends for Thermoplastic Pipelines
UNP’s Thermoplastic Bends are gentle, long-radius directional changes preferred over short-radius elbows for high-flow lines, abrasive slurries, and applications where pressure drop matters. The 3D bend radius (3x pipe OD) keeps flow smooth and prevents erosion at the inside corner.
Available in 45°, 60°, and 90° bend angles. Bends are formed from pipe stock (same material as the line) rather than cast or moulded — preserving the full pipe wall thickness and pressure rating through the curve.
For sharp-corner installations where space is at a premium, our injection-moulded Thermoplastic Elbows are the alternative.
Why Choose This Fitting
- ✓Long-radius (3D) bends — lower pressure drop
- ✓45° / 60° / 90° bend angles
- ✓Formed from pipe stock (full wall thickness)
- ✓PP / PPH / PVDF materials
- ✓Sizes DN 25 through DN 200
Dimensions, Materials, Testing
Long-Radius Bend Dimensions
All dimensions in millimeters unless noted.
| Pipe Size | OD (mm) | Bend Radius (mm) | Bend Angle | Wall Thk (mm) |
|---|---|---|---|---|
| 25 | 25 | 75 | 45° / 60° / 90° | 2.9 |
| 32 | 32 | 95 | 45° / 60° / 90° | 3.7 |
| 40 | 40 | 120 | 45° / 60° / 90° | 4.6 |
| 50 | 50 | 150 | 45° / 60° / 90° | 5.8 |
| 63 | 63 | 190 | 45° / 60° / 90° | 6.8 |
| 75 | 75 | 225 | 45° / 60° / 90° | 8.2 |
| 90 | 90 | 270 | 45° / 60° / 90° | 9.0 |
| 110 | 110 | 330 | 45° / 60° / 90° | 10.0 |
| 125 | 125 | 375 | 45° / 60° / 90° | 11.4 |
| 160 | 160 | 480 | 45° / 60° / 90° | 14.6 |
| 200 | 200 | 600 | 45° / 60° / 90° | 18.2 |
Materials of Construction
| Material | Description |
|---|---|
| PP (Polypropylene) | General-purpose, low-cost option for mildly corrosive media at moderate temperatures. |
| PPH (Polypropylene Homopolymer) | Higher mechanical strength than PP — better for pressure service. |
| PVDF (Polyvinylidene Fluoride) | Superior abrasion resistance and high mechanical strength. |
| ISO.PP (Isotactic Polypropylene) | Improved temperature and chemical resistance vs standard PP. |
Connection Types Available
| Connection | Description |
|---|---|
| Socket Weld | Heat-fused socket joints for permanent, leak-tight assemblies. |
| Butt Weld | End-to-end heated fusion for in-line pipe sections. |
| Threaded | Removable threaded fittings for serviceable connections. |
| Flanged | Bolted flange joints for easy disassembly and inspection. |
Testing & Quality
| Test | Standard / Result |
|---|---|
| Hydrostatic Test | BS EN 12266-1 / DIN 8077 / DIN 8078 |
| Visual / Dimensional Inspection | 100% Sampled |
| Pressure Rating | PN 6 / PN 10 / PN 16 (depending on size & material) |
| Temperature Range | 0°C to 80°C (PP) / 0°C to 95°C (PPH) / -40°C to 140°C (PVDF) |
| Certifications | ISO 9001:2015 |
Other Thermoplastic Pipe & Fittings
Thermoplastic Pipes
THERMOPLASTIC PIPE & FITTINGS
Thermoplastic Concentric Reducer
THERMOPLASTIC PIPE & FITTINGS
Thermoplastic Couplings
THERMOPLASTIC PIPE & FITTINGS
Thermoplastic Elbow
THERMOPLASTIC PIPE & FITTINGS
Order Your Thermoplastic Bends
Tell us your pipe size, material, and bend angle — we’ll supply the right bend for your layout.