... steel OEM service ISO9001 Product Name: stainless steel 304/316 valves casting part Materials: carbon steel, alloy steel, stainless steel, ... or ShangHaiLead time:30 -40 daysPlace of Origin: Ningbo,ChinaSoftware for specification drawings: PDF, Auto CAD, Solid work,JPG,ProeMain production ... parts . are suitable to us also 4) They are using for oilfield drill machinery, pipe connection and others.