GB/T 12459  异径三通 DN 150×150×20-Sch140TR

DN 20×20×150-Sch140 TR

DN 300×300×300-Sch80S TR

WN125(a)-25rf0 D=250

WN500-600 RJ2291621695FS0M36fmch8000-0.0ra21010

bl450(b)-6rfRF sch160�-9 RC=88=41 nrf

WN 10"-300 RF Sch40S

法兰SO25B)-16RF= δ0=200-0.25R

WN200(B)-25 FMf100

WN80-150R