偏心异径管 DN 80×65-9REF B=/F S0-9F00-4ch800.2535) TS/9FF0f s=10mm2+0

DN 80×65-9 REF B=/F S0-9F00-4ch800.2535) TS/9FF0f s=10mm2+0

NB/T4721 RF800-1.0-40FM14060sch40 s

BI 4000

wn600-900rf sch400(MRF0-2.8000.0s=4.5hch80 5

47021 RF650-0.6 d=20 δ=325g/@4702

WN100(B)-25RF B=20am

法兰 PL400(B)-6 RF

WN80(B)-25RF S=3

WN50