GB/T 12459  异径三通 DN 250×250×90-Sch80TR

DN 250×250×90-Sch80 TR

WN 1 1/2"-300 RF

20615WN350a-600RF8

BL40-16RF

SO 400(B)-10 RF

PL 80(B)-10 RF

WN 25(B)-16 RF60-120RF RF=8RF2.2

WN 150-900 RJ Sch40S

wn125-25RFrf0-32-1

WN300-2500Mf46r.5f H=3 B rfA=Rf h1RFS87164.5140.50 S=8)-16RF0.25ch4r1