HG/T 20592  法兰盖 BL 450-6 M)-6FMf0 RFRF RF.0/60

SO 4"-300 RF

BL450-6 M)-6FMf0 RFRF RF.0/60

LP-1h1в�3.57bЪ50-2.5/5 ط·آ°�

WN 500-600 RF S=168-40rfb15fhrff|022c0

TPB-6 δ=10 S1=10

WN50-600 RF

WN50-100 RF

PL 100(B)-16 RF

PL 25(B)-40 RF RJ r

WN 600-600 RFFM S=12 Sch40810RFch80s hgF200rf