GB/T 12459  同心异径管 DN 200×100-3RCpampch=pfR1p021

DN 200×100-3 RCpampch=pfR1p021

ASME B16.5-2020法兰盖 BL600-300 RF

WN600A-25RF f1=5B)-16

WN80(a)-100m=600150-300

WN350(B)-25RF S=10u--3

wn150-300 fm s=8½Â

wn100a-40fm s=42013 W

pl125(a)-16 rf b=3

BL500-16 RF

WN200-40RJ1021633-1h40500- rfFS �.4