TABAN FOOLAD establishing an overall quality system, controls the whole process, specializes in the design and produce variety kinds of REDUCER (Concentric & Eccentric). We produce according International standards such as DIN , ASTM, TS , ISIRI and special order of our customer's and guarantees the end products depending on its well equipped laboratory. Fittings Specification : ASTM – American Society for Testing and Materials. ISIRI – Institute of Standards and Industrial Research of Iran. DIN – Deutsches Institut für Normung. TS – Turkish Standard.