HG/T 20592  法兰 WN 450-16 RF S=12/h80ฐ�s=6

法兰WN450-16RF S=12/h80ฐ�s=6

wn50(A)-16RF-16R50 RF404/F-0.6

PL40(A)-25 RF b=2h40SFch40SRF RF/

L WN25-300 RF rf144--1-16rf b=00 T

BI 168ch802S= S=60900-

SO 80(B)-40 fm b=5M-30

WN100(B)-63G S=6F=2B)-16RF

LJ 22"-150 RJ Sch80S=18/S=54-160h4

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