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Tekfen İmalat useful links

- Tekfen Holding
- Tekfen Tower
- Tekfen Construction & Installation
  Tekfen Engineering Co., Inc..
- Tekfen Real Estate Development Investment & Trade Co.Inc
- Toros Agricultural Production & Marketing Co., Inc
- TAYSEB
- Tekfen Insurance Brokerage Services Co.Inc
- Azfen
- Hallesche Mitteldeutsche Bau AG (HMB)
- Akmerkez
- Antalya Stüdyoları A.Ş.
- The American Society of Mechanical Engineers (ASME)
- The National Board of Boiler and Pressure Vessel Inspectors
- Tubular Exchanger Manufacturers Association, Inc. (TEMA)
- The American Society For Nondestructive Testing (ASNT)
- American Society for Testing and Materials (ASTM)
- American Welding Society (AWS)
- American National Standards Institute (ANSI)
- American Petroleum Institute (API)
- NACE International
- British Standards (BSI)
- National Institute of Standards and Technology (NIST)
- Welding Research Council (WRC)
- Material Properties Council (MPC)
- Pressure Vessel Research Council (PVRC)
- DIN Deutsches Institut für Normung e. V.
- European Committee for Standardization (CEN)
- International Organization for Standardization (ISO)
- Pressure Equipment Directive (PED 2014/68/EU)
- ADR - International Carriage of Dangerous Goods by Road
- Equipment intended for use in Potentially Explosive Atmospheres (ATEX) - Directive 94/9/EC