弯头 DN 20-Sch40S90EL/

DN 20-Sch40S 90EL/

so500(b)- 25rf

20592 PL300B-6RF)-16 rf40 k=200 c=18 h=48B/026mm0 RF1 40C=16rfmfmB--1. pl40-16r

BI14002506.3-1.65wn15F

WN 100(B)-16 RF S=4.51.0

WN15-600m fFRF2 WN600(

WN150-300 RF Sch400 fm s

WN 300-300 RF Sc

pl40-10 rf a/

wn50b-16