... : Carbon Steel, alloy steel Product Name: casting chain connecting link for railway wagons Materials: carbon steel, alloy steel, stainless steel, Items: FOB ... or ShangHaiLead time, 30 -40 daysPlace of Origin: Ningbo,ChinaSoftware for specification drawings: PDF, Auto CAD, Solid work,JPG,ProeMain ... . are suitable to us also 4) They are using for oilfield drill machinery, pipe connection and others.