GB/T 12459  偏心异径管 DN 65×40-4RE=80SJhN RF00h10Sh

DN 65×40-4 RE=80SJhN RF00h10Sh

PJ/RJ 80(B)-16 RF

WN 15-300 RFrFF

WN 800-16 RF S=6.31=91 d=243 c

WN150-150RF A=168.3 B=154 S=7.

bl150-16rf(b)Р�F b=300-0.RF f

æ³⬢å⬦°pl200-16rf

BL450()-6RF3105 S=820615 WN350-

HG=T20592-2009PL32(B)-16 RF0 RF