The document appears to be a comparison of international standards for various grades of steel. It lists specifications for different steel grades according to standards set by various international organizations, including DIN, EN, ASTM, JIS, AFNOR, BS, UNI, GOST, UNE, and others. The steel grades range from low carbon steels such as S185 to higher strength steels such as S355. For each steel grade, the different specifications or equivalent grades according to each international standardization body are provided.