This standard is applicable to the manufacture and acceptance of two-color water level gauges for power station boilers, industrial boilers or containers with nominal pressure PN ≤ 32MPa, working pressure P ≤ 22MPa, and working temperature t ≤ 330°C.
JB/T 4268-1999 history
1999JB/T 4268-1999 Specification for fabrication of bicolor water gauges