GB/T 12459  同心异径管 DN 65×50-Sch40RC�@4п▓�

DN 65×50-Sch40 RC�@4п▓�

WN50(B)-10RF S=3B=42.7f650-100-300 RFf6 R/

pl32(b)-10rf hg=t21633

pl50(a)-10ffb5t/F1900-F/fh1

pl80-10rf(b.2s54B=103.M63 RF H=42=96/-300 RF01 RFF3)-

PL100(A)-16 RFamp30

wn100b-150rf=98FF6R/

WN100(B)-16RF S=3

wn250-150