GB/T 12459  异径三通 DN 1500×1500×50-Sch30TR

DN 50×50×1500-Sch30 TR

so20(a)-300RF015 c=/155.6

BII 320006RF/-20/

PL 50(B)-10 RF

WN 50-300 RF Sch40s

PL40A)-10RFf b=1057sp

20615 bl500-16rf-(45F

WN125-16 G AA=12�

JWN 300×400(B)-25 RF Sc- D=210 B=110 b=3 C160700-1.

WN 50-150 RF80sRF Sch400b27 D