HG/T 20592  法兰 WN 400(B)-25 RFf000-RF scPT0@4 Rch4755-R@0000O0

wn400b-25 rff000-RF scPT0@4 Rch4755-R@0000O0

PL 80(a)-6 RF/=60/j.6 RF0-300RFp;a

PL65A-16FF0/ebfc4eM60RFS=5m40R.5/

LJ 125(B)-160 RF

SO 100-10 RF5F/=

20615WN250-150rf Sch40s

WN 2"-150 RF Sch1600

WN 25(B)-160 RF S=4

PL 200(B)-10 RF1f RF

SO 500-900