NB/T 47022  法兰 RF 1500-4.0/20δ1=12ژFf4sF B=

2 RF 1500-4.020δ1=12ژFf4sF B=

WN600(B)-40 RF S=6ce/u00b4=60 Sch80ampampampamp

NB/T47021 M800-1asS)-rf t-1.0F3F25250RFRF S

WN 800-150 RF

SO10-16RF RF Sch40S5SS0=30.5 S1=30.56 RF60

47065.3 B2 RF50 RF S=7.11ch80Sh400F Sch40sch800 RFmF S s6

4 B240sm S/