NB/T 47021  法兰 M 500-1.6´1=10

47021 m500-1.6´1=10

3 FM 700-1.6 δ0=12 H=125

WN 50(B)-10 FF S=6

WN 2"-1500 RF SchRF0pampampampampampampampa

PL120-6RF1a RF40Р’В Р вҖ

IF 32-16 FM H=.6F Sch40= fmF40 r

aWN 1500-150 RF B d=643 k= n=4

WN 50(B)-10 FF S=3

BL400(a)-10