GB/T 12459  同心异径管 DN 750×10-Sch10RC

DN 750×10-Sch10 RC

WN600-900 RF B=379f6ru/RFS

wn15-150rfs=50f-2rc/haiboh�Sch164182h

SO300(B)-25 RF1=fHG/T206

WN 50(B)-25 RF S=6F/FF/RF SCH30.0215F=146 H=

WN150-150RF-SCH40ch0/1=7

WN500-150RF SF S=1

wn600(B)-25RF10 HG/

WN 100-150 RF Sch400F

PL250(B