HG/T 20592  法兰 WN 300-160 RJh406 S=3.50L L5CH80SF=2SCH6

wn300(a)-160 rjh406 S=3.50L L5CH80SF=2SCH6

wn40(b)-160RF/ RF0B=22ampam

WN40-300 m 10RF-1 RF80S Da S=10)-16rF BB=5F5et/

PL80(B)-16 RF D=190 b=4

SO 32-150 RF4.0100-m.

SO 450(B)-10 RF1500-=78

3 FM800-1.6-130-00-s430 C=60 f1=5 L=45 n=52 b=ch40 RF40-2.001