HG/T 20592  法兰 WN 300(B)-10 RF S=4

WN300(B)-10 RF S=4

WN25B-16 RF/-98.50-1.6RFf-1.650-25RF25R f15 RF/

TH(Rc)100-150 RF fm48.56T5

WN250(B)-300RFZRF S=3F S=3-16

5 CM 300-1.020δ0=18

WN3"-300 RF S=11.13

BL50-10MfF3h80S RF Sn=12

WN100(B)-100 RF S=5.50-0

so450(b)-16 fm s=10

BL300-40