GB/T 12459  等径三通 DN 500-Sch80STS00(900rj10 RFm D=120

DN 500-Sch80S TS00(900rj10 RFm D=120

wn450 -600 rf20

BI 450D=0-9

WN 150-300 RFF RF016001paa=6fhp src09b=474-3

WN15A)-16 RF63╬┤=4220

WN65(a)-63M50-cx/i/ L=060.r S-6i500rfRFRFB)-1 RF

WN65(B)-40 RF D=10=3

WN 50-150 RF

WN65(A)-16 RF f1=0(6RFB)F0)-1T