HG/T 20592  法兰盖 BL 250-10 Gh4RF=3.5 H1=5rf s=2

bl250-10gh4RF=3.5 H1=5rf s=2

SO 100-150 RF

pl65(b)-16 rf d=180

BL 150-150 RFF1100 RFf s-F1=1@5@RFSchch40)-1@=1)

47021 C-M400-1.6

BII3200=18

BL 150-150 RFF1100 RFf s-F1=1@5@

WN100(B)-25RF

WN100-150RfhsFF

BL 150-150 RFF100(b)-16rf sc8S H=1946520/225 n