HG/T 20592  法兰盖 BL 250-2.5 FF0535900-12-RF40f

bl250-2.5ff0535900-12-RF40f

BL 80-150 RF

WN30-300RF

WN350-150RF

PL 250-16 RF

WN 14"-150 RF

PL80(B)-16RF b=2.51.0

WN 65(B)-63 M

PL 150(B)-10 RF

SO150A-25M RF B=60-3 rf000r55 S=6 sch800w/35 bl102Kpampam1.6 δ0=10;-150 RFRF6 RFRFMRFRF10RFampampamp;