HG/T 20592  法兰盖 BL 250-2.5 RFFF@rT RJF1.020 RF& RF-R9eJ-R9eSF SCf6�S@RF@443RF@AFFF RF Sc

BL 250-2.5 RFFF@rT RJF1.020 RF& RF-R9eJ-R9eSF SCf6�S@RF@443RF@AFFF RF Sc

DN700-PN6 PL RF Ⅱ

so100(b)-150rf

SO 4"-150 RF

WN 25-150 RF Sch80

wn10-16rj00SchSCH80

2 RF 2200-0.6 δ1=10

WN 20-300 RJ Sch40

TH 125(B)-25 RFS00@00RSch2sss.5 RJ2hM0R

SO