HG/T 20592  法兰盖 BL 25 -40 M2F SF0.6RFrf1C=16 Kn400-6Sc1=0(B)-

BL25 -40M2F SF0.6RFrf1C=16 Kn400-6Sc1=0(B)-

3 FF 3000-1.620dF13 h=45 n-4+f

WN20(B)-25 FF0/-1.0ch1AA=61.1 K=120

SO 250-150 RF

DN250/PN40/11C S=S=7.1

bL150(B)-16 mh8

WN 25(B)-25 RFF)-16 RfA1

wn25-150 rf s83 na=f0ni1016RF1H0.2F1.0

WN125(A)-300 M12 sch