https://www.octalmetals.com/astm-a537-class-1-2-steel-plate/ is steel plate standard for heat-treated carbon-manganese steel plates that are intended for pressure vessel use.
https://www.octalmetals.com/astm-a537-class-1-2-steel-plate/ is steel plate standard for heat-treated carbon-manganese steel plates that are intended for pressure vessel use.