GB/T 12459  同心异径管 DN 100×25-Ⅱ-4RC Sch80314ch.

DN 100×25-Ⅱ-4 RC Sch80314ch.

BL 450-10 FF S=48168a

pl600-16ff b=8RF10F

wn20-300rfsch40ss δ(b)-25r

WN500-150 RF A6ch1

WN32(a)-25RF806 RF.6-.6r450(WN000-=

BL500-10 RF S=3.6 R

SO 200-100 RFS12s=6F5S=4L100h05

BL 65-25 RF MX5ch40FRF b=

WN 20-