The shift to advanced polymer systems
Over the past two decades, building services have moved rapidly away from traditional metal pipes toward engineered polymer systems. Along this path, Yazd Baspar has become a trusted reference brand in Iran—thanks to innovation, rigorous quality control, and a broad product range. Engineers and contractors, from small jobs to large developments, repeatedly choose Yazd Baspar pipes and accessories. Below, we go beyond the usual introductions to examine the technology layers, product lines, and practical notes behind this well-known name.
Brand growth timeline
- Start-up (1997): Extrusion lines launched in Vali-Asr Industrial Town, Yazd, focused on PP-R pipes and fittings.
- 2000s: Capacity expansion, advanced laboratories commissioned, first national certifications for potable water.
- 2010s–present: Entry into three-layer push-fit technology, launch of low-noise PolyPlus, and five-layer composite YazdPEX. Integrated quality management systems adopted and MES software implemented for real-time production monitoring.
Manufacturing technology & continuous quality control
- Fully automated multilayer extrusion: German/Austrian lines with closed-loop wall-thickness control; diameters 20–160 mm with ±0.1 mm tolerance.
- CNC-driven injection molding for fittings: Water-cooled molds with zoned temperature control to prevent stress around brass threaded inserts.
- ISO/IEC 17025-accredited lab: Pressure crack resistance tests (PN20 at 95 °C up to 1000 h), flow-noise tests per DIN 4109, and FT-IR spectroscopy for raw-material verification.
- 2D code traceability: QR on every pipe length with date and production shift to streamline after-sales tracking.
Yazd Baspar product portfolio
1) PP-R piping & fittings (commonly “green pipe”)
- Use: Potable water and radiator heating.
- Key feature: Continuous service temperature up to 70 °C, short-term 90 °C; fully resistant to ionic corrosion and scale.
- Jointing: Socket fusion; typical weld time for Ø32 mm ≈ 8 s.
- Durability: Calculated service life of 50 years at 20 °C, 20 bar.
2) Push-fit soil & waste: PolyTek and PolyPlus
- PolyTek (grey): Three-layer structure with a flame-retardant core; ideal for car parks and common risers.
- PolyPlus (white, low-noise): Engineered acoustic layer achieving < 15 dB(A) at 2 l/s; suited to premium residential towers.
- Common diameters: 50, 75, 110, 125, 160 mm.
- Push-fit connection: EPDM ring with double-lip profile for reliable sealing and thermal expansion take-up.
3) Five-layer composite: YazdPEX
- Structure: PE-RT/PEX-b | hot-melt adhesive | 0.2 mm aluminum | adhesive | PE-RT/PEX-b.
- Applications: High-pressure hot/cold water grids, underfloor heating, and fan-coil branches.
- Oxygen ingress: ≤ 0.1 mg/(m²·day) per DIN 4726—protects radiators and heat exchangers from corrosion.
- Jointing: U-profile or TH-profile press with stainless sleeve; post-press hydrostatic test at 1.5× design pressure.
Table 1 – Technical comparison of Yazd Baspar’s three main families
| Index | PP-R (single-layer) | PolyPlus Push-Fit | YazdPEX Five-Layer |
|---|---|---|---|
| Diameter range (mm) | 20–160 | 50–160 | 16–32 |
| Max short-term temp. | 90 °C | 95 °C (wastewater) | 95 °C |
| Jointing | Fusion welding | Push-Fit O-Ring | Mechanical press |
| On-site repairability | Medium | High | High |
| Reference standard | DIN 8077/78 | DIN 19560 & 4109 | ISO 21003 |
| Priority use | Potable water, radiator heating | Domestic drainage, ventilation | Underfloor heating, hot/cold risers |
Table 2 – Acoustic & safety comparison of push-fit systems
| Feature | PolyTek (standard) | PolyPlus (low-noise) |
|---|---|---|
| Sound pressure at 2 l/s | 28 dB(A) | ≤ 15 dB(A) |
| Reaction-to-fire class | B1 (flame-retardant) | B1 (flame-retardant) |
| Seal ring type | Black EPDM | White antibacterial EPDM |
| Estimated service life | 50 years | 50 years |
| Recommended applications | Typical residential/office | Hospitals, hotels, luxury apartments |
Competitive advantages
- System integrity: Pipes, fittings, clamps, and accessories from a single brand reduce logistics errors.
- Long-lasting oxygen barrier: In YazdPEX to prevent corrosion of heat exchangers.
- Ease of installation: Up to 40% labor time reduction for push-fit vs. solvent-weld PVC.
- Color & dimensional stability: UV stabilizers for outdoor/exposed runs.
- Project support: On-site engineers for design verification and installer training.
Certifications, field tests & international recognition
Yazd Baspar holds the Iranian Standard Mark across its production lines and has obtained WRAS (UK) and KIWA (Netherlands) approvals for direct contact with potable water. In acoustic testing by Germany’s Fraunhofer institute, the PolyPlus system achieved Class S17. Combined with experience supplying hospitals and five-star hotels, the brand has become a first choice for professional buyers.
Design & installation essentials
- Linear expansion: For PP-R, α ≈ 0.15 mm/m·°C. For a 30 m riser at ΔT = 40 °C, use expansion compensation or switch to YazdPEX.
- Pipe support spacing: Horizontal PP-R Ø32 mm—max 80 cm; five-layer—50 cm.
- Press fittings (five-layer): Use U-16 and U-20 jaws for 16 & 20 mm. Post-installation pressure test: 10 bar for 30 minutes.
- Push-fit gradients: Maintain 1% slope for horizontal pipes in ceiling voids to prevent odor backflow.
After-sales service & distribution network
- Direct dispatch from Yazd plant to project sites nationwide for bulk orders.
- In-person training covering fusion welding, pressing, and push-fit assembly.
- 10-year warranty subject to proper installation; activate via online serial registration.
Yazd Baspar & Tamam Baha
As a major distributor, Tamam Baha stocks the full Yazd Baspar range—pipes, fittings, and accessories—and supports projects with official invoicing, product authenticity assurance, and expert consulting. Supply is not exclusive; other authorized dealers are also active in the market.
