HG/T 20592  法兰 PL 250(B)-16 RF bRF¼Fh40150 C=60 H=1

pl250b-16rf bRF¼Fh40150 C=60 H=1

bl400(a)-10rf b=3)-1 RF HGaf/54-121250FffFRF SCH80S1=

bl25(b)-10 fm000

SO 100-300 RF714 n=2

3 RF 1300-4.010 RF S=40.53=65-0.¦Â°pl32b-16s550

1 CRF 1300-0.25 δs=10

PL125-10RF

SO20-150RF SCH10S

bl700(a)-2.5rff s1