HG/T 20592  法兰 WN 50(B)-10 FM S=51)-D=42 A=85 RF-300

WN50(B)-10 FM S=51)-D=42 A=85 RF-300

PL25(A)-16 RF C=15 D=114 b=rf1000)-10 RF21R=

WN150(B)-25 RF5/58-0.6/34ch40s-6b

WN25-300 RF sch160s-63 RF S=F S

PL600-16RF0-0f/n b=3F-

WN150-300RF150(b)5

PL300-10MFM-606r60s25253RFrfch800=6

PL350b-6 RF0.0/ch160h4�