GB/T 12459  弯头 DN 32-590E3Drf15аёЈВҳаё�

DN 32-5 90E3Drf15аёЈВҳаё�

bl150-150 rf l=3/4&ampampampampampampampampampampampampampampampamp

3-FF900-1.0/54/110 S=12（φ

WN 100(B)-25 RF S=4= D= C= H= L= n/

WN 3"-300 RF Sch10S

NB/T47023 FM2600-1.0

PL 50(B)-16 RF

WN200-100RJs=1

WN2