NB/T 47021  法兰 FM 650-1.

NB/T47021FM650-1.

WN50-2500FMRf90-0H= b=3 C= C

BL40-40m10G/T2059-150-1-25230

SO 150(B)-16 RF5 k40s65RF-1G 509 R4 b

WN 3"-150 RF S=7.62 Y1=10

5 CT 700-1.620δ0=16

BL500-300 RF/10¢Ãƒch4006rfmpampampampampampamp

47023 ff500-1.5 H=4

WN 100-600