HG/T 20592  法兰 WN 450(B)-16 RF S=20325 m1.6/7 b=)-

JWN 250×200-300 RFrf1000-pampa s= undeJ S=8 H

WN450(B)-16 RF S=20325 m1.6/7 b=)-

WN150(B)-25FM S=6ذ¨ذ†ذ’آ·ذ¨آ°ذ’ذ†ذ¨ذ†ذ’زœذ¨ر–ذ

PL 600(B)-16RF592-=N b=1-300

SO450(A)-25 rf6 RF t=98 RF S=14c123/u008RF-170f-1=3&

205