HG/T 20592  法兰 SO 500-16 RF-B s00 RB)-6 R5F D= RFFl500

SO500-16RF-B s00 RB)-6 R5F D= RFFl500

wn250-300rfsch20-

BL400-6 RF D=5foru

WN 20-150 RF Sch80

WN50(B)-63 M S=¶80 B=1

wn500(B)-16RF S=12

pl50(b)-16rfb=51

SW 80-300 RFA=19m s=3-40 RF S=85hampampmpampam0r5RFB)

WN25-150RF SC=40RF S=14fsc55-110p

3 CM 90