HG/T 20592  法兰 WN 65-16 RFs=3.5=-16aFF9SO=4S=765 RF S50 RF Sch

wn65(a)-16rfs=3.5=-16aFF9SO=4S=765 RF S50 RF Sch

WN100(B)-16 RF 10S

wn100-300rfsch160-¬â€RF 32*49 RFpampam

WN200(B)-150RF00R8P= B=15F=

wn150-300rf sch10s H=262

LWN 80-150 RF Sch40S

PL80(B)-16 RF=1 B1=405

WN 25-16 RF H=220=FF IB)-40 RF S=

47023 RF