NB/T 47065.4  支座 C2ampam

DN 150-4 C20ampam

BI 45075bl606/u0-

wn50-40 rf sch80

WN 500-16 RF=1

wn50(b)-40rf

WN65A-16T/F5702

pl125b-16fm/4

PL 200-10RF.5d Sch40S150 R

JWN 80×125-300 fmPL 80

WN20(B)-40RF S =4.4S=6 D=210 C=16 H=45=8f sm16mnF040 A=525rf sfB5f b1=322/165(b)0-140=