HG/T 20592  法兰盖 BL 350-40 FF)000-1

BL350-40 ff)000-1

WN 25-600 RJ Sch80S=FM870S

B WN650-150 RF10110 ff/h4/50 R

PL 40(B)-16 RF5/66h80Ru�sch40s70-

WN 100-150 RF.ch80SRFh/00(B)â1500R9085-33

WN300-25RF S-3005

WN600-150RF S=

WN600-1500 RF Sch40

1 RF 550-0.2520δs=10110 ff/h4/50 R

BL 2