GB/T 9124.1  法兰 DN550-PN16 WN RF Ⅱ S=12

DN550-PN16 WN RF Ⅱ S=12

WN 25-900 RJ S=5.50S=1

JWN 50×80-300 RF Sch40F@4005 SCFrc R5- s RF-25M S=6RFFm446(a

wn400-63rj000-S/0s-fm450-200-

lwn250-900 rfm4R00R2-R071@°FRF2-R040LSc0ch41Р“Т°РІТ–вҖқ&ampam

so10b-16ff-300 RF S-1Y=250SbRF