HG/T 20592  法兰盖 BL 150-16 RFRF b=2RFN100-150 RF Sch400S=10

HG/T20592 BL150-16RFRF b=2RFN100-150 RF Sch400S=10

BL50(b)-6RF3c=20 kF d300-Sch20 TR10RFRFSch160fR

wn80-150rf sch40 hg20615-2009 RF B=1

so15a-25rfb=3j/

pl15(b)-16 RF D=8

wn65-150rf1=3 b0

lwn 25-150rf h=1623-19910=14

A WN1000-150 RF S=16

SO125b-40RF