HG/T 20592  法兰盖 BL 150-25 RFRFF=15 RF S=12F BL80-1

WN40(A)-40 RF S=4b=4 D=25

BL150-25RFRFF=15 RF S=12F BL80-1

wn50-600rf s=6+ch0040 RF-600RF/)-6 RF&

WN 500(B)-25 M S=12&au

WN 600-150 RFb=586106 FF b=0 BB=90 D=

pl50(b)-16 rf d=102 b

WN50-150 RF6 L=2215a6=0S=1116h-1

2 CM 450-0.620δ1=186 L=22fpampam