HG/T 20592  法兰盖 BL 250(B)-10 RF fmL50

21520BL250(B)-10RF fmL50

SW 18"-150 RFHG/T20592-20

WN 600-900 RJ S=60

PL150(B)-16 RF D=284.8

WN 40-900 RJ S=6

1 RF 450-0.6gF0 RJ16F

pl 32-16 RF

WN 50(B)-40 M S=10

BL20-300M600/

WN 18"-150 RF Sch40SF5@.50s)-16/&eqid=80ebfc400rj0am0html6401S=