HG/T 20592  法兰 WN 25-63 M S=5/00

WN25-63M S=5/00

LWN80-600 RF B=77C=20 D

WN 1000(B)-10 RF S=8�п�

wn350-10fm R

b wn700-150 rf b=7350R-255=3eST

WN125(B)-16RF,S=6

LWN 40-150 RF B=50 S5(B)-

LWN 40-150 RF Sch160 H=39

BL200(B)-16 RF D24t1-)-6

bl32(b)-10RF& C01.Sch1rf6049 RF B80800F S