GB/T 12459  弯头 DN 80-1045ELG S40ing.ht

DN 80-10 45ELG S40ing.ht

WN200-300RF16 RF RF574-127

WN 100-150 RF Sch80S/u00c3

pl100(a)-16rf hg/

bl250-300m52�°RF80dataata RJ Sch8

so300-900rjF1B)-b)H62135RFScF5 R00F012410rf4RFRF0 RF=

BL 200(B)-16 RF52.440R

BI 4005 h=5

WN 100-150 RF B=101

PL 250