HG/T 20592  法兰 PL 250(B)-10 RF 20-16 rf0S C=3B)-1

PL250(B)-10 RF 20-16 rf0S C=3B)-1

pl500b-10rf f1=/15 WN400-60 Sc

47023 rf1500-0.6/70-165 î´0=12

pl300(b)-16 rf s=8配套螺�

PL 125(B)-6RF00RF scS RF S=1.52n=5-150 RF SCH80�

bl100-300 rf/static0 *�500-s/@47023 rf1000-1.0 δ=60 h

PL65-6RFB)-1