With over three decades of engineering, Iran Ettesal Asia designs and manufactures carbon-steel butt-weld fittings for gas distribution networks, refineries, petrochemical complexes, and water systems. Advanced automation, high-grade carbon steel, and a fully automated production line make the company a trusted partner for contractors on critical projects.
Growth & Development
- 1990 – Launched in a small workshop near Tehran (Afsarieh), producing the first welded elbows.
- 1994 – Opened a larger plant and expanded the product range.
- 1996–Present – Continuous line upgrades, quality systems implementation, and entry into export markets.
Today, 250+ specialists in Tehran and Markazi Province manufacture fittings whose durability and sealing performance match international benchmarks.
Product Range
Iran Ettesal Asia produces seamless and welded fittings in NPS 1/2″ to 16″:
- 45° & 90° elbows
- Equal & reducing tees
- Concentric & eccentric reducers
- Caps and nipples (including swage nipples)
- Couplings, bushings, and custom fittings for high-pressure service
Table 1 – Size range & recommended wall thickness for Pressure Class 20
| Nominal Size (in) | Welded Wall (mm) | Seamless Wall (mm) |
|---|---|---|
| 1/2 | 2.9 | 3.2 |
| 3/4 | 3.2 | 3.5 |
| 1 | 3.4 | 3.8 |
| 2 | 3.9 | 4.3 |
| 4 | 6.0 | 6.6 |
| 6 | 7.1 | 7.9 |
| 8 | 8.2 | 9.0 |
| 10 | 9.3 | 10.2 |
| 12 | 10.3 | 11.4 |
| 16 | 12.7 | 14.0 |
Guidance: values are general for municipal and industrial gas lines. For higher pressures, select higher Schedule per design requirements.
Technical Advantages
- Structural integrity (seamless): fittings are formed from seamless pipe; no circumferential weld means a lower risk of cracking and leakage.
- Dimensional accuracy: CNC machining and precision dies enable fast fit-up and excellent alignment on site.
- Pressure & temperature resistance: operating range −20 to +400 °C; up to 40 bar in Schedule 80 and above.
- Full traceability: each piece is marked with the Heat Number and company stamp; chemical and mechanical data are traceable.
Certifications & Safety
| Management System / Standard | Scope | Project Benefit |
|---|---|---|
| ISO 9001 | Quality management | Consistent output at scale |
| ISO 14001 | Environmental management | Compliance with green requirements |
| ISO 45001 (formerly OHSAS) | Occupational H&S | Improved workforce safety |
| API 5L | Line pipe specification | Alignment with oil & gas sector |
| ASME B16.9 / ASTM A234 | Dimensions & materials | Interchangeability with global fittings |
Quality control follows three tiers: incoming material testing (spectrometer), non-destructive testing (UT, MPI), and hydrostatic pressure testing. Results are recorded and archived with the product.
Key Applications
- Urban and rural gas transmission & distribution
- Process units in refineries and petro-refineries
- Steam and condensate systems in power plants
- Closed-loop ring-main fire-fighting systems
- Raw-water transfer and water treatment networks
Authenticity Guide
To avoid counterfeit purchases:
- Check the “IRAN ETTESAL ASIA” mark embossed on the body.
- Match the Heat Number with the Mill Test Certificate (MTC).
- Compare the part’s weight with the brand’s reference weight table; major deviations indicate fraud.
Tamam Baha is one of the authorized distribution channels for Iran Ettesal Asia, supplying fittings with test certificates and authenticity assurance, plus technical pre-sale guidance and after-sales support. The brand is also available through other reputable suppliers in the market.
