法兰 SO 450-10 RF f1=3=4/S

so 450-10rf f1=3=4/S

wn15(b)-160rf d=23

wn150-63 rf s=7N15

PL 80(B)-16 RF D=200-1 C=20-0.5 f1=2.5 b=3

WN100-150RF-Sch120scr17n

NB/T47023 RF700-1.0/50-1050(10/535c

WN40B-16RFF0RF300 RFS=2 H1=1

20623 A WN800-300RF

WN50-600 RF  46 RF-1

TPB-4 R

WN80-63R