Shandong DS machinery co.,ltd is a synthetic import and export company, is a collection of research and development, design, the manufacture, the sale of integrated specialized company. Our main products are four series, including valves, pipe fitting, rubber product and machinical equipment. Valves include all kinds of cast iron and stainless steel and brass gate valve, butterfly valve, check valve, diaphragm valve, ball valve and other valve parts.Pipe fitting include casted and forged flange, fitting and malleable fitting and stainless steel fitting; Rubber product include ball mill rubber lining and rubber conveyor lining and rubber joint and other rubber products; Machinical equipment i ... more