HG/T 20592  法兰 WN 20-16 RF8S=¨0b-100RJF2/1=1WN25-150

WN20-16RF8S=¨0b-100RJF2/1=1WN25-150

so 300-25 m 20/u16 R)-1FMF6 rRJ8,H95mm18050 Rrf RJ

WN 50-300 m10-1.60RFf-4 �6Lch10RF Sch40

lwn 40-150 rf b=34 h=200

BL RF 40K 25A�.html6@603IIRFwn60RF-A1=15-25 RFb=36croppe/0R00=3f/data

47023rf1700-1.6/0- RFB)