NB/T 47021  法兰 M 500-2.5δ s=60-00A ch80D= B

1 M 500-2.5δ s=60-00A ch80D= B

BL 1000-10 RF

WN80(B)-16 RF00-0.6f/m895=70δ1=19

so450(a)-16 rf&=80ebfc4e040Sch40B2/J=6am©б-RFco

SO50(B)-16RF22-1

2 RF 1000-0.2520δ1=10

1 RF 400-1.016RF h=156f 500-1.

bl40-150rf d=100/40A=60 S= S=63

WN2"-300 RF