What is the fine-grained topic of the following text: All products are produced according to the principal specifications such as ASTM B348, ASME SB348, ASTM B265, ASTM B381, ASME SB381, ASTM SB338, ASME SB338, ASTM B861, ASTM F67, ASTM F136, MIL-T-9046, MIL-T-9047, AMS 4928, AMS 4911, AMS 4961, ISO5832/2-3, WL3.7024, WL3.7034, WL3.7064.They are widely used in aircraft, shipbuilding, chemistry, petroleum, medical treatment and so on. Only return the topic.
Standards and applications of industrial products