HG/T 20592  法兰盖 BL 80-6 FF-2F BB=04j=

bl80-6FF-2F BB=04j=

bi 500-f/s ãs=5.5=13-f/

PL50(B)-16FFb=B1=65.5C=16L=19K=1RFh2r.html

SO65-6RF0 RF/84-150 s0 RF0

PL80(A)-10RFf1=1.

so250b-10ffmp

PL 150(B)-25 fm

SO65(B)-10 RF S=3Rpampam=

PL500(B)-16 FF C=25 B1=500/

WN 100-300 RF B=112-n=8 K=1609(b)