GB/T 12459  弯头 DN 25-4.590EL GaaB)-2500-10 RFSc

AF12-DN25-4.5 90EL GaaB)-2500-10 RFSc

lwn25-150rf sch8

DN15-PN6 PL RF Ⅱ B=22

PJ/SE450-16RF16 rfFRF100-15

DN20-PN6 PL FF Ⅱ B=31

BL500-300 RF RF s)r.6-6

SO25A-300RF’CH1

PL250-16RFS=4.5Ssch80RF6RF600-1.

WN 900(B)-16 RF Sch40SRF/B=J S12==0R

3 CRF 1