NO!
IS2062 is for use in structural frames, as is A36. Are you fabricating pipe, or structural steel?
API 5L comes in different yield strengths. What yield strength are you trying to buy?
A FEW WORDS OF ADVICE. FIND A DIFFERENT SUPPLIER AND NEVER CALL THAT GUY AGAIN!
“What I told you was true ... from a certain point of view.” - Obi-Wan Kenobi, "Return of the Jedi"