NB/T 47023  法兰 C-RF 1400-6.4/20δ0=8

3 CRF 1400-6.420δ0=8

wn125B-40RFR0-100/25153SRF

BL 6(B)-16 RF RF RF BfS=3.5.2 h1==1S=30T S=3

WN25B-25RFS=50S F484h0f´0R=8=20mpamp

BL50-100M50-16RF20п0mpampampampampampam

wn50(b)-160M6 r.0/46-110F

PL350a-10RFRJf1=4 b

LWN 20-600 RF H=434

WN 50(B)-