GB/T 12459  等径四通 DN 600-Ⅱ-10CRSK=S=

DN 600-Ⅱ-10 CRSK=S=

WN1000B-16RF6R.

4 B5 DN=260/70-1000-6/48-1

wn500-150rfhg)-1-5 b=fd

PL50(B)-6 RF D0 RF0+hg=tf1=6RF

WN100-16 RF Rhf10

WN125-300RF B=1347Fb=50h9b

PL40B-6RF621=5´1406/f1000-103050Rch1

WN 500(B)-10 FM-18f06sch80RF65 k=C=20R Sch8

WN1