GB/T 12459  弯头 DN 300-890EL200-=616 1200-0rf-1

DN 300-8 90EL200-=616 1200-0rf-1

PJ/RJ 150(A)-6 RF0000

3 CG 3000-2.520δ0=6

1 CM 300-0.620δs=14

WN25-600 RF HG/T20615AAGRF

wn350(b)-40 fm s=90

WN40b-16RF032 c=182

WN 100-300RF5.497030KRF=10.972080c50RF4.50 h=2500

WN600-150RF HG/-60s.0 R

PL80A-16 R