butterfly valve 1.material:cast iron,cast steel,stainless steel 2.OEM orders are welcomed stainless steel butterfly valve1.Disk sealing ring is made of stain-less steel and put onto the disk by heating therefore it is firm after cold .2.OEM orders are welcomed3.material: cast iron cast steel stailess iron4.suitable pressure:PN1.0--16Mpa5.payment:L/C,T/T,D/P stainless steel butterfly valve
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