GB/T 12459  异径三通 DN 500×500×50-Sch100TRD=G/

DN 50×50×500-Sch100 TRD=G/

PL600(B)-16 RF C=390�6/F S.0F

WN 500-300 RF0 rf02F=3 HG/T20592-20091

WN 200(B)-100 RF S=12F/i/FM S/585 w

wn150-150rf a=168.3 b=154

BL 20-600 RJ

BL 25(B)-16 RF

BL10(B)-10 RF

BL100-150 RF C=10

BL100-16 FF D=605 C=24 K=555