弯头 DN 20-Sch80S45ELS=10.66rfgi121-1.R1=8-

DN 20-Sch80S 45ELS=10.66rfgi121-1.R1=8-

WN150-300RF6 RF C=41/110f b=11/

WN 400-300 RF B=37875/@WN

PL50(B)-10 FF D=158 B1=70 C=16 b=6/1

Wn100b-40mh40.56 RF0RF-40FM.0/56-ch200sFF.0-

LWN80-150RF SCh/

so80-300gM.92300-f/@

WN25-300 FM Sch60Ã

47023fm160