NB/T 47065.1  支座 A 4568

2 A4568

PL80(B)-16 RF

DN 50-5 90ELRF620f sSch16(a)-4B)-40FFpampampamppampquotwn100-30

BI 2159

WN 50(B)-16 RF5826

PL159(B)-10 RF500 RJ Sch120rf5

WN0(B)-63RF5-50c2

PL100(B)-16 RF452

BI 7005

WN 50-150 RF161892249(b)-16rf3 B436��@@H@RHR.5 RJj@5c2@RF@4436