HG/T 20592  法兰 SO 200(B)-16 RFf5H40h1F �.3RF60�b-

SO200(B)-16RFf5H40h1F �.3RF60�b-

so 50-150 RF

B WN 42"-300 RF B=1048ЁВ°Р’406пO2m 158901263

WN 300(B)-16 RF δ=6F350(B)-

DN50-PN320 BL RF Ⅱ

SO 150-150 rf

hg/t20592wn25-25rf

47023 fm800-1.6=48-120 ÃC=17

SO 250-150 rf

TH20-150 FFFF S