GB/T 12459  弯头 DN 50-8.890ELH=11015

wn150-63rfs=4ffb/9 PL2683/u00c6/

DN50-8.8 90ELH=11015

3 FM 400-4.0…، B=835 RS0A2 â…،FRFd@8RF

PL300(B)-10RF615-2009(B)-10RF10 PL

3 M 1500-2.5 δ0=16

SO25-16 G16BR

WN65a-16RFWN5800-4.0RFF26FMscm s0 bb= n0

wn20-1500rf scS6235 k=190 l=22 c=26 d=

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