GB/T 12459  弯头 DN 400-890EL991

DN 400-8 90EL991

23-M600-1.

BL 350-10 RFF S

PL 600(B)-6 FF0s

WN 20-16 RF350-

WN400(B)-25FM S=8M S=8RF S=

WN80(B)-100 m

bl 25-300 MF-6.460RF RF S=540 RF S=6F Sf1=1 H1=1ch80

wn400-600 rf b=372.00O2F0(-F@

SOP FF 5K 25AA0f0-.5°FSFS1@40F05@4cmMF B=21.1,F