GB/T 12459  同心异径管 DN 50×25-5RC s=4 rj sch80sh6=t

DN 50×25-5 RC s=4 rj sch80sh6=t

SW40-600 RF

WN65-300FMh1g206/50-1片hg/009

bl500-25 rf c=48R61=8-16 Rh/

PL 125(B)-25 RF

WN25-150RF

47021 m900-1.0 Р вҖңР ТІР�

WN 55-16 FMGRГў00-90f@4 Rch4755-R@0000O0@00 S

PL 500(B)-10 RFpampamp;quotamp;