GB/T 12459  弯头 DN 20-490EL�‘Р�

DN 20-4 90EL�‘Р�

WN 20-300 RF S=2.87

WN 80(B)-40 FM S=3

WN 450-150 RF Sch80Sch10S0/ sch

WN 40(B)-40 RF D=14c

WN 20-300 RF S=3.91

WN 50-600 T S=3.91

bL 25-150 RFH25 RJ-Rb/60-Р°С

bl25-63 RF Sch40ahMFM@40sc0 RFR RRF /F SmRF�.�

DN1000-PN16