HG/T 20592  法兰 PL 300-16 RF D=265=4JAHh1=5

PL300-16 RF D=265=4JAHh1=5

SO 50(B)-16 RF b=3.50.621633-1991F S=12S=

WN 80(B)-16 RF S=6150 rf0-1.

wn100a-25tF=3.615 WN400-600RJ&10M20δ0=180�Â

47021c-fm700-1.0æÅ

3 RF 300-1.0 δ0=8¡0.6

wn32(a)-40 rff1 b=361=083RF509=19TF B=f/ Ãs

pl350(b)-