i am working in valve industry as a design engineer.
I am looking material standrads. which ASTM or SAE standard for AISI 4130 acceptace for large cross section ,
I have reffered ASTM A 29 and other ASTM standard related to AISI 4130. but they can use up to 250 mm diameter.
so what standard for large cross section like 500 or 600 mm and what is the heat treatment standard ?