HG/T 20592  法兰 WN 100-25 RFB=3 RF S=4.6 δ0=166 RF S=84)

wn100(a)-25 rfB=3 RF S=4.6 δ0=166 RF S=84)

47023 FM1000-2.5 h=48 H=134 δ1=10=120

WN 400(A)-63 RF S=9.1 A=412 C=63 H=167Ⅱ1.63 bF

WN 400-600 RF A=418 B=390.410 PL RF ⅡB=21 H=480.2RJ

PJ/SE 250(B)-10 RF S= A1= S1= h= d=/

PL300 -25 RF-2.FHG/T216