HG/T 20592  法兰盖 BL 50(B)-16 RF=60

BL 50(B)-16 RF=60

pl50(b)-10rf)F08/ dp0F 1=20 δ=32B=F/h=3000 wn10 δm R

a 1800F)1.0 sh8000-12)-25 rf csh0.

WN20A-25RF S= RF00s=5FB(B.56 n=40 sc

WN100 -100 RJ12=14H)-10rfRF/

PL200(b)-16fm-300 RF

WN100-1500RJSch400rf s=8F

pl80(b)-6 fm92061RSchF2.61