GB/T 12459  弯头 DN 50-690E3D

DN 50-6 90E3D

HP-2f30260FF.2R10 R=1=h80S6 f/rf/RFF Sch4

PL 50-16 RF70-

bl15b-10 rf Â5700=121.7f

SO 80-150 RF B0S.0vrfC.62.0-110

PL100(B)-10FFB0==1s=1.6/s50RF5 DpI-R.5F RF

WN 250-600 RF XS/R00/9

WN500-6RF0FrfRF110F

bl200-63t/46RF800-53Sb==46/0RF620(b