HG/T 20592  法兰 PL 40-16 RF0-1.0-300 RF B=41=2B)-1

pl40-16rf0-1.0-300 RF B=41=2B)-1

5 FF 550-2.520δ0=10 DN=100

PL 20(A)-16 RF d=56 b=2

DN 20-Ⅱ-8 90ELb1=59 k=200

3 FM 300-1.6F b=5a0I BS=10hxxs/39-f b=20RChg60 BB=aS=3(b)05pampampamp

bl500-300RF S00

WN 50(B)-25 RF S=3hampampmpampam0r5RFB)60S-00010