GB/T 12459  异径三通 DN 650×650×10-Sch40TR/0-2

DN 650×650×10-Sch40 TR/0-2

WN 20-300TCF@40@40H40-150 RF S=9hfm) RFH=87 N=50)0RF0-1.0GRF=250RFrJ&a=0

wn450-900fmSchJ/

20615 lwn50-150rf sch80

47023 fm 500-1.6/F Sch40 SR

SO300B-25RF b

WN350-150FF=3F0-1.

pl80(a)-16 ff b=

bl15-2500rjwn50-RF sS

wn3