HG/T 20592  法兰 WN 300-25 RF S50 RF 8THKF BB=161097H=1150RF/

WN 300-25 RF S50 RF 8THKF BB=161097H=1150RF/

wn500(b)-1500 g s= b=3=5/

SO 300(B)-10RF 50r=3.58hg/40RF044

wN100-150RFRF

WN50(B)-10rfRFs=8l106Frf16-3-Sch1

5 RF 1350-0.620δ0=20fB=1/

WN 50(B)-63 RF S=3.6

47023 FM1600-1.00c

AXC-7.4/2SFFFr6RF0rf s0-s/@wn