GB/T 12459  异径三通 DN 1050×1050×15-Sch20TR95=FM/

DN 15×15×1050-Sch20 TR95=FM/

so20-600 m60n 300-150f2=4.RF0M Rf1

WN300-600FMch840600-1l100-1696 rf 6-1

BL 50-600 M(h10S.amp1.0/RF0M Rf1

SO 40-150 RF B=44.5=9F0RF Schht

WN450-300 RF S=10637=

WN25-600 M Schu00RJ B=4JcRFRF-1

WN32-16RF00lm16mn00a)9

WN 1