HG/T 20592  法兰 PL 80-25 FF A/02

PL80-25FF A/02

WN 400-150 RF a/h2

WN25(B)-63 RF؟½

SW1"-150 RF f=2

WN 150-150 RF Sch0c3

SO65-900 RF0 R8RF SF Sch

BL600-16 RF=F6m386@

wn80 -160rf1Fc

B BL1300-150 RF.8@RF@0mpampampampampampampamp

PL15(A)-6 RFcF60 RF005 HG40@S00-60schSC1&��