6. - DN 200 schedule 40, What does DN stands for . A symbol for nominal diameter or size measure for piping in conformity with European standard.
7. - Tabular Column : The pipe data given refers to which code?- My guess is B36.10 dimensions/weights of steel pipes.
8. - Diff Codes: There are many codes , but how we should decide
which code we should follow?. Through lot of hard work.
what are the yardsticks to decide about them ? Its service and
application.
Why are there so many codes ? Because there many service and
applications.
9. - Should a Piping Engineer Mug up all the codes ? No they don't
have to "mug up" all the codes. What they need is to gain an
understanding of the code so that they myy be able to comply with
its requirements.
which codes r important – the ASME B31, ASME Section IX and API 576
to my knowledge. But in your case, I guess Its Section III and B31.1.
what do we understand by the suffixes such as S, W, WPB, OSY, ISNS on page 10 material specs? Check out some of the valve catalogs . Picture is worth a thousand words –with all those cutaway views its easy to understand.
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