NB/T 47021  法兰 C-RF 300-1.0-4.0/data/public/blue/watermark.png

WN 2"-300 RF Sch40S.

WN80(B)-1500 RF/mpampam=255S12c SchM4 H)-121000-l15-1 K=125f1=3

WN 20-16 RF S=3.91

PL40(B)-16TG1H800592�0=1680pam

WN 65(B)-40 FF S=10-l174-/Sc0=2a0D=216rfDN=41

a wn900-900rf25 RF b=400J06

wn 80-300 g sch80s/9.7 B=381.4 b=4