API ve ASTM nedir?
API: American Petroleum Institute – Amerikan Petrol Enstitüsü
ASTM: American Society for Testing Materials – Amerikan Malzeme Test Birliği
by Dr. Abdullah DEMİR · Published · Updated
by Dr. Abdullah DEMİR · Published 29 Kasım 2009 · Last modified 17 Eylül 2012
by Abdülkadir YEŞİLYURT · Published 7 Mayıs 2012 · Last modified 10 Ekim 2015
by Dr. Abdullah DEMİR · Published 7 Nisan 2014
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