GB/T 12459  同心异径管 DN 50×25-Sch40RCG‘�2 c

DN 50×25-Sch40 RCG‘�2 c

WN450 B-16 RF=125SCH40

WN150B-150 RF5.5 H1=12 bl500-10 rf/

wn200-150rf sch80

WN 300(B)-25 RFδs= SF-1.19/F0

DN65-PN16 PL RF Ⅱ

WN 50-150 RF Sch40S

pl30(B)-25 rf

BL200(B)-63RF

wn20-300rf sch160=30G49.1PL10(B)-10N=120.RFR4r