Azin Luleh Sepahan has been producing a wide range of random copolymer polypropylene pipes and fittings (PPR-C Type 3) in Morchekhort Industrial Town, Isfahan, for nearly two decades. Production complies with ISO 15874-2 and Iran National Standard license 11215 (ISIRI). Incoming raw materials are tested. Production lines monitor pressure, impact, and dimensional stability. As a result, products are supplied with a 50-year design life at a constant 20 °C and nominal pressures PN10–PN25.
Materials & Manufacturing Technology
- Random Copolymer Polypropylene (PPR-C): Low density, melting point 140–150 °C, and excellent chemical resistance to common building acids and bases.
- Multi-stage Extrusion: Vacuum sizing dies for stable OD and wall thickness; gradual cooling to minimize residual stress.
- Socket Fusion (Heat Fusion): For fittings up to 125 mm. Heating times follow DIN 16962 to ensure homogeneous, void-free joints.
Standards & Certifications
| No. | Certificate | Scope | Issuing Body |
|---|---|---|---|
| 1 | ISO 9001:2015 | Quality management | DQS, Germany |
| 2 | ISO 14001:2015 | Environmental management | DQS, Germany |
| 3 | Conformity to ISO 15874-2 | PPR-C pipes & fittings | ISIRI (Iran National Standards Organization) |
| 4 | OHSAS 18001 | Occupational health & safety | DQS |
Azin Luleh Sepahan Product Range
- Single-layer and three-layer pipes
PN10 (cold), PN16 (cold/hot), PN20–PN25 (higher pressure & temperature).
Three-layer PP-RCT with reinforced middle layer for underfloor heating up to Class 5 (95 °C). - Polymer & threaded fittings
Couplings, 45°/90° elbows, tees, concentric reducers, end caps, flanges, polymer ball valves, and brass-threaded transition fittings (for manifolds and metal equipment).
Sample Dimensional Table (Azin PN20 Pipe)
| Outside Diameter (mm) | Nominal Wall (mm) | Operating Pressure 20 °C (bar) | Approx. Weight per 4 m (kg) |
|---|---|---|---|
| 20 | 3.4 | 20 | 0.68 |
| 25 | 4.2 | 20 | 1.05 |
| 32 | 5.4 | 20 | 1.70 |
| 40 | 6.7 | 20 | 2.60 |
| 50 | 8.3 | 20 | 4.05 |
| 63 | 10.5 | 20 | 6.50 |
| 75 | 12.5 | 20 | 9.50 |
| 90 | 15.0 | 20 | 13.7 |
| 110 | 18.3 | 20 | 19.9 |
| 125 | 20.8 | 20 | 25.4 |
Weights are based on density 0.91 g/cm³ and may change with formulation updates.
Key Technical Highlights
- Very low pressure loss thanks to roughness ε ≈ 0.007 mm—about one-third of metal pipes.
- Electrochemical corrosion resistance: No metal-ion leaching; drinking-water quality remains stable.
- Thermal & acoustic insulation: Polymer structure absorbs flow noise; with λ ≈ 0.24 W/m·K, secondary insulation needs can be reduced.
- Excellent flexibility & weldability: Route changes with fewer fittings in branch-intensive projects.
Design & Installation Guide
- Max hanger spacing (PN20, fluid at 60 °C):
20–32 mm → 50 cm; 40–63 mm → 75 cm; 75–125 mm → 100 cm. - Thermal expansion compensation: In vertical runs, use expansion loops or sliders every 2.5–3 m (α ≈ 0.15 mm/m·K).
- Hydrostatic test: After fusion, pressurize to 1.5× design pressure (min 15 bar) for 30 min; allowable drop ≤ 0.1 bar.
Comparative Table — Azin PP-R vs Alternatives
| Feature | Azin PP-R | Galvanized Steel | Multilayer PEX-AL-PEX |
|---|---|---|---|
| Specific weight | Very light | Heavy | Light |
| Installation speed | High (fusion) | Low (threading/flanges) | Medium (press) |
| Service life | ≥ 50 years | 15–25 years | 30–40 years |
| Corrosion resistance | Excellent | Weak | Excellent |
| Temperature range | 0–95 °C | 0–70 °C | −40–95 °C |
| Pressure loss | Low | Medium | Low |
| Project cost | Economic | High | Higher than PP-R |
| Recyclability | 100% | 70% | 50% |
Key Applications
- Cold and hot potable-water distribution in residential, commercial, and healthcare buildings.
- Underfloor heating and Class 5 heating risers.
- Food, milk, and beverage transfer lines (hygienic, odor-free).
- Compressed air up to 10 bar; drip irrigation and greenhouse systems.
- Pools, jacuzzis, and SPA installations (chlorine and salt resistance).
Size Range & Supply
Azin pipes and fittings are available in 20–125 mm diameters and PN10, PN16, PN20, and PN25 classes. Stock is maintained continuously. For the full item list (from 90° elbows to 10-inch flanges), design-stage technical support, and fast dispatch, contact the sales team.
The TamamBaha store is one of the distribution partners for Azin Luleh Sepahan, enabling online or in-person purchasing nationwide with steady availability, engineering support, and quick shipping. TamamBaha is not the only sales channel; you are free to choose among other distributors.
