HG/T 20592  法兰 PL 350-25 RF C50-300 rf b=894 RF S=

PL350A-25 RF C50-300 rf b=894 RF S=

wn40(B)-25M rf0B-16FF Sch80=80 DFF7f0RF=21/1r�-25FMS150rf=

wn300-300 fmL=25552000-)-25 RF16 rf S=3.5S=1

Jso 40×80B-25 RFFm0-92210

SO200-40T624.5F S=0S R�

B WN750-600 RJ-120fmF

PL400(B)-6RFL300(B)-1-1.6δ)-

PL