HG/T 20615  法兰 WN 80-2500 FF Sch100�17.5 RJ

WN 80-2500 FF Sch100�17.5 RJ

WN 150-25 RF0F0@S5 RJrvlet50FBB5 R5 RJ2�1@5c��

BL125(B)-150 FFmF0ASCHr52

wn20a-40rf s=4a=27

WN350-150 RF S=10 L=10

WN 200-150 RF Sch40@RF@443@40@S5 RJ11FF9S0δ6 δ06RF50

WN 80(B)-40 RF S=5

WN150-300 RF SCH80Sff6G5