HG/T 21574  吊耳 SP-20

WN300-600 RF s1hga50 RF50nW1.035b)100-16rfR)FR┐�N450-a=3=8100 RF S0rf4H40S00-S

SP-20-300 rf S025-6 RF=65011.52FSch4ch30hpRF.6/91-1

WN 15-150 RF3�

pl40b-16rf D=140

法兰 WN20-600 RF Sch160tn

WN 50(B)-16 FF S

hg/t20592wn400-16rf0° wn100-

lwn450