GB/T 12459  同心异径管 DN 900×650-Ⅱ-3RC3.5)5/@or rf sch½@4ï؟½o-r0000-1.0J00 RFJ6 RF5@FSFS1@c

DN 900×650-Ⅱ-3 RC3.5)5/@or rf sch½@4ï؟½o-r0000-1.0J00 RFJ6 RF5@FSFS1@c

bl5000-6rf225t-1525Me0Sr01

WN1000(B)-10 RF S=6

PL500(B)-6 RF

SO 50(B)-16 RF b=3

5 M600-1.0

BL15-600RJNb)-25 m

bl80-150rfC/am0S5 RFF63

LWN40-300 RF Sch160 H=350

BL 100-600 R