In the United States, A36 angle steel is governed by ASTM A36/A36M standards, which specify requirements for chemical composition, mechanical properties, dimensions, and manufacturing processes. Other countries that use A36 angle steel may either adopt these ASTM standards directly or have their own regulations that are based on or similar to them. For example, some countries in South America and the Middle East that follow American engineering practices may incorporate ASTM A36/A36M requirements into their local building codes and standards for construction projects. In countries where their own steel standards exist, there may be provisions for the use of A36 - equivalent steel grades, with adjustments made to suit local material availability and environmental conditions. These regulations and standards ensure the quality, safety, and proper application of A36 angle steel in different countries.