HG/T 20592  法兰 WN 40-63 G S=34RF S=A)-16RF=

WN40(A)-63 G S=34RF S=A)-16RF=

IF450-16 RF=30 RF Sch405-MB)0S=7h16δ=68 H=170 l=3 S=82M6R2H1=1800 bb=724 k-1.120Sc40SHG8Рҝв�80F006FF.000-6.

wn80(a)-16rfs=4-600RJ

WN 300(B)-16 FM S=8 S=11 D=460 K=410 H=78 C=28h40 H=242=8(B)-16 RF HG/T

PJ/SE 150