HG/T 20592  法兰盖 BL 100-25 RF0R0Fp@�c2@RF@443R4FFF

bl100-25rf0R0Fp@�c2@RF@443R4FFF

SO 3"-300 RF/65-0.6

Sw40(B)-300RF517hM10

SO100-150 RF0-B)-500(b)-16 d-20

SO200-25 RFquot

SO50-40RF HG/foM003805-1D‡å�FF.5)d=&eqid=f50-1059

So300(B)-10 RF/0r

WN 150-600 RF B=150

WN 1"-2500 SG

WN 14"