... steel Machining process:milling,lathing,routing,refining stainless steel valve part ,1)ISO9001:2008 certification.2)Over 16 years experience ... milling,lathing,routing,refining ,etc Item Name stainless steel valve part Product description1)Material:304/316 stainless steel or according ... and bending, CNC machining,drilling,powder coating,pressing part,polish,etc. wedge disc for Knife gate valve part