Technical Data
DIN/DIN EN Standard
ASTM Standard
The American Society for Testing and Materials (ASTM), one of the largest developers of international standards, began operations in the United States in 1898. These standards are most widely applied in oil, gas, and petrochemical industries globally, including in Iran.
ASME/ANSI Standard
The American Society of Mechanical Engineers (ASME), established in 1880 with a focus on mechanical engineering in the United States, is one of the oldest standard-developing organizations with over 600 standards and codes.
ISO Standard
The International Organization for Standardization (ISO), with over 70 years of history, was established in 1947 in Geneva, Switzerland, and began its activities with more than 26,000 standards.
Since the International Organization for Standardization has different acronyms in various languages (e.g., "IOS" in English and "OIN" in French), its founders chose the short form "ISO", inspired by the Greek word "ISOS", meaning "equality."