This standard specifies the technical requirements, test methods and inspection rules for carbon steel and low alloy steel forgings for pressure vessels. This standard applies to carbon steel and low alloy steel forgings for pressure vessels with design temperatures higher than -20°C and design pressures not greater than 35MPa.
JB 4726-2000 history
2017NB/T 47008-2017 Carbon steel and alloy steel forgings for pressure equipment
2010NB/T 47008-2010 Carbon steel and alloy steel forgings for pressure equipment
2000JB 4726-2000 Carbon and low-alloy steel forgings for pressure vessels
1970JB 4726-1994 Carbon steel and low alloy steel forgings for pressure vessels
JB 4726-2000 Carbon and low-alloy steel forgings for pressure vessels was changed to NB/T 47008-2010 Carbon steel and alloy steel forgings for pressure equipment.