GB/T 12459  弯头 DN 15-Sch40S90ELS48.-S=46

DN 15-Sch40S 90ELS48.-S=46

47021 PL250(B)-16RF

WN 50(B)-40M/R9n= k= d= n= l=

BL50-10RFF B=5824-110 rf12u0

so/@47023 RF1000-1.0/70-165

SO 18"-150 RF40Sfrr1.0/70-165168.4 D

PL25(B)-25 FF5fF88s=16rf

BL 50-25 FMRC0S RCCH40SFF-RFRF=3 b=F Sch80/

WN20A