GB/T 12459  等径三通 DN 250-9TS10 RF12chF=frf

DN 250-9 TS10 RF12chF=frf

PL250(B)-6Ffff0sГҶ

WN25(B)-25M,

wn 25(B)-63 fm/8 K=525 D=5f b=316 RFRf/

wn20-150 t5 WN400-600RJ"‚Ã

wn25(a)-10 ff25

SO 40(B)-16 FF

JSO 200×250(B)-16 FM

BL550-16RF5/0rjN1

WN20(B)-600 RF1.s/05j-1Frf sch80�ƒæ3.6