GB/T 12459  异径三通 DN 550×550×80-Sch140TR0 TR00-Sch140 TRTRT

DN 80×80×550-Sch140 TR0 TR00-Sch140 TRTRT

WN 50-150 RF B=48 R1=≥5 R2=≥5

WN 400(B)-16 RF S=5

WN 1"-150 RF Sch80

BI 600

BL900-2.5 RF0-150F=22l=2 S/

PJ/SE 250(B)-16 RF

WN 1000(B)-16 RF s=12

so40-16rf

20615wn80-300rfd=66.6ÃF Sch4000-150 Sch8