GB/T 12459  弯头 DN 50-690EL9bl25

DN 50-6 90EL9bl25

DN 80-Sch40S 90EL �

wn25-25M

WN 100(B)-16 RFAmpam@415h40

TPB-3 δ=12 S1=12

SO 80(B)-16 RFfFd.

BL65-160 FM

LWN 4"-300 RF Y=270

TPB-3

WN3"-2500 RF&@t.5 RJ.0forFf@n L 30F-m�.5R5.@RFSp&@t.0FM@BLh40�PL FF ⅡRF8=4�@RRF