HG/T 20592  法兰 LWN 100(B)-16 RF S=6H=2

LWN100(B)-16 RF S=6H=2

PL200(B)-10 RF b= b= B.03k1f0�@

BL 500-150 RF

wn40(A)-40RFF2=4.5-0c2/data/src/nbsp325-f/@bl1

DN 25-Sch80 90EL

WN500(B)-10FFSc80S RF Sch40S�@RFFF s=6a未

WN 20-600 RF S=4

WN 50(B)-16 RF rf,s=7)-2F)5 ff2H

BL00-900RFpaўmpa