NB/T 47022  法兰 FM 2600-4.0/20δ1=12b)-1´2mo-30My=s0g25

wn 20(b)-25 Mf)-1f und50(B)-16RF B=163

2 FM 2600-4.020δ1=12b)-1´2mo-30My=s0g25

WN 50-25Mh40SL5 RF SF50N=10N250-21

3 CM 2200-1.620δ0=66x-s4Rww.

WN 15(B)-25 FM S=10

BL300(A)-150RF1030 d1=2770 d3=272

WN 20(B)-100 M S=2.5F Sg f

WN 50-300 RF6FFhM/XX-1.