ASTM A370 can be used as an umbrella specification for virtually any steel product. Since your steel elbows used for piping are too small for the listed tests, you can use A370 as a substitute and just measure and test the base material. The tensile strength resulting from the basic A370 tensile...
There is no official license needed for issuing an MTR. That being said, there are several things to watch out for.
Your material can always be tested by a customer, or an outside lab. In the event that you are publishing data that is not verifiable by other laboratories, then you can be held...
