HG/T 20592  法兰 WN 200(B)-10 RFRF0 RF=38100=1

20592 wn200b-10rfRF0 RF=38100=1

20592pl125b-10rfrf sh40s)-10RF6RF35F

47023 c-fm 550-1.6/h1JSc0Fuotsers=10

WN 300(B)-10 RF S=5

WN 80-900 RF Sch40S

WN 40(B)-16 RF

wn600-16 rfr6-285','/', @470

LWN50-900 RF SCH=5005 RCH160-0-165ELRF1F0 RFh4

WN150-150 RF