GB/T 12459  弯头 DN 200-690ELA�5�

DN200-6 90ELA�5�

WN450-900 RF Sc

WN80(B)-16 RF146R

SO 450-150 RFrf10f.5=100Fnd=230fFHG20/195��

WN 4"-1500 SFM=8 11a

PL15-16RF/T20610120RF1000-10 RFB)-9

PL450-40 RF0R-150 RF0F16rf-RF

PL50B)-25RFch80F00mpampam

WN 500-600 T Sch40P RF==18

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