HG/T 20592  法兰盖 BL 50(B)-63 RF/CH31-150 rf s/59*B.5-25.

BL50(b)-63RF/CH31-150 rf s/59*B.5-25.

so50(b)-25fm b=4 =150 n=52 dl

SP-1)

BL 20-16 FF-1005-1.0-1.0F s0

HP-1 DN=800 δ=16 S1=16Sc

47021 FM700-0.6ff9°

BL25-150FF0.0rfF 63F07(B)-600-1. S=6s=-6

47023 fm1000-404.0δ=64

BL65-10RF=1-1.RFrf& R15ر†�c