HG/T 20592  法兰 PL 400-6 RF+h/f)-

pl400-6rf+h/f)-

wn125b-16 rf s=

LWN50-300 RF H=548.5�F713.7”ҖР‘вҲ

wn50(b)-40 ff s

SO150-150 RF12025RF Shgc000-150 RFFF0EL46

SO 25(B)-16 RFf0659RF42 fF r50RFB0 ST Sch100=2

SO 200(B)-16 RF7 s00A/

JWN 50×80(B)-25 RF S=2.9

SO 40(B)-16 RF-150