2016JB/T 6217-2016 PB series flameproof shielded motor (with pump) technical conditions
2005JB/T 6217-2005 Technical specification for PB-series flameproof canned motors
1992JB 6217-1992 Technical conditions of PB series flameproof shielded motors
JB 6217-1992 Technical conditions of PB series flameproof shielded motors was changed to JB/T 6217-2005 Technical specification for PB-series flameproof canned motors.