GB/T 12459  偏心异径管 DN 1100×10-Ⅱ-5.5RE01p /F.

DN 1100×10-Ⅱ-5.5 RE01p /F.

WN 15-2500 RF-2.5SCH40Sfm50070-6-25

SO 2"-150 RFG/T20592SF S=4 WN

pl20(a)-16 rf aa=22FM����

WN 800(B)-16 RF S=8

WN50-300RFSch/62 A=1-16RF S=4L1

WN150-2500 RF Sch160

WN80(B)-25 FM/

WN100-1500RJSch40/50f sch8/