GB/T 12459  偏心异径管 DN 500×350-5.5RER�®à M xsR0 RF Sch

LJ 1"-900 LG Sch=500

DN 500×350-5.5 RER�®à M xsR0 RF Sch

SO 500-150 RF

BL 350(B)-16 RF00(b/u00c3/u0082 500-s /@4702 RF0-1.

WN1000-600 RF S=24  HG/T20623-2

47023 rf800-6.4 ã€800

BI 220080304-16 RFf0RJ-r==1

3 FM 2400-4.0F RF20650 RF)-ch