NB/T 47022  法兰 FF 650-1.6=5=500RF RFRFFM S=5=4.6 D

2 FF 650-1.6=5=500RF RFRFFM S=5=4.6 D

LWN20-300RF Sch85-120F0(B)-1

PL500-16 RF bfch42-

wn250-40rf s=10

pl65b-6 rf D=14021u10 Sch40S5

wn80(b)-63fm-10rf1Lp;ampam-7=4

LWN 400-600 M Sch80Spampam

WN 300(B)-40 M S=S=10

nb/@47022 rf1000-1.0/F RF R

wn50(b)-1