HG/T 20592  法兰 WN 150-16 FF S=5./public

bl150-16rfw0 k=2rf51120 RF B=1 f3.0F-2 S=15

WN25(B)-150 RF S=30 s-20-1.6/ DN1 HG50 RF

wn200-40rf S=18.26RFf s=3=4

WN 15-900 RF05Frf1FF16/F20615-200900 R S=10RFF)-0

pl25-10 ff d=343 k=)-1-2100

nb/t47023 c-fm 700-4.0RF0R0A10005FMF SCH s=3GF08n

wn50-150