HG/T 20592  法兰盖 BL 1800-6 RF50 ОҙhS0150RF s=4 S=5 H1=20 n=4ПҶ16Ho

BL1800-6RF50 ОҙhS0150RF s=4 S=5 H1=20 n=4ПҶ16Ho

NB/T47023 -FM 500-4.0/46-1-25-600RJ&9002 K=11802.5=3 C=2113256

WN 150(B)-25 RF S=4f700d=49120mS=4.15)

pl20-10 rf d=100 a/8c=45

pl125-10ff d=240 k=20

PL 600-10 fF D=835h40s100rff0R.f50F100000=16FRFf