GB/T 12459  弯头 DN 20-Sch40S45ELEL Sch80RFRF

DN 20-Sch40S 45ELEL Sch80RFRF

LWN80-150 RF Sch40S50.8 Y=307

bl400(b)-25fm00scF0

BL500-25 RF D=730/S=4-0.6

5 CRF 1650-4=

WN 32-25RFFs=016

NB/T47023 FM1200-2.509/0SS=540/0-16300FFM--

pl250 b-40 rf S=3400f/@470/70-1654 Sch80S60f=5

SO 300(B)-10 RF60F0

3