弯头 DN 100-490ES/u00

DN 100-4 90ES/u00

2 FM1500-1.0na

NB/T47023-2012 FM1800-1.05

WN80(B)-25 TG6ff/

pl20-10rf(b)00c/

PL150(b)-16fMF S/

PL250(A)-16RF rf/

wn32(b)-63fm/u00/

WN40A-63 FM=308.0S=10RFF6RJ=1.0(shgt2061

so80(b)-16 rfF0S/rf δ=-1.00-1.db)-10r/=4892F0F s==211 Cr(10