GB/T 12459  异径三通 DN 50×50×25-Ⅱ-5TR4h

DN 50×50×25-Ⅱ-5 TR4h

法兰 PL32(B)-16RF D=150

BII 2000

wn25b-600m s=4.5

pl150(b)-6 fm c=20

PL 32(B)-16 RF b=4

WN80-150 RF

NB/T47023 M1500-2.5@S/2@FF pl0 SM400 ST B=��or

wn 600-40 m61=83-2

A BL 500-900 RJRF RJ0 RJR500 RJ Sch100cF@ï؟�00O2m