HG/T 20592  法兰盖 BL 25-16 FFN40-150 RF Sch160 A=1590c3/u0083/public

PL50(B)-16 FF bRFRF und=a-3 S=850-150FF0ampauo=F40

bl250-160t°1633-1991m00=29.55 S=10/=68D=3

WN100(A)-16 RF S=878 A=27 und16rf a=140 b=1

WN100(B)-100 Rf

PL 250(B)-16 RF b=4 b1=58 d=155 k=1RF16 rfmh

WN600-600 M Sch406/446=3-65 m s-1.)-

GB/@WN1