GB/T 12459  弯头 DN 450-Sch100180EL3 rf

DN 450-Sch100 180EL3 rf

DN80-PN6 PL RF Ⅱ

sw 20-600rf60-1.6 RFf

bl25b)-150 rfå…/F S=84(hg.6f1=/0Sc

WN1500-150 RF S=20mm0-600R/0mRF rf

SO40(b)-16rf2-2=16050RFrfB=S0 RF-

BL600-300 RF00rfF-1/u00m-6300 RF

PL 80(B)-10 RF30-ss39005-10 RF Sc

耳座A71.6