HG/T 20592  法兰 PL 40(B)-10 FFB1=462-2h10 h1

PL40(B)-10FFB1=462-2h10 h1

wn20-900 rj b=21 RF(b)-16 rfRFF25

WN 65-150 RF S=5.

WN25B)-160RFF�040 S= S=3.5RFF0(B)-

bl450(b)-16mfmrfR0-100S427 HR1=12 R2=12 H=127.3 C=35.

PL80(B)-10 RF B1=9ch100F=311540

BL80(B)-16 RFtHG20615 WN400-600RJ&

WN100(A)-40