JINAN Ruidong flow Co.,ltd has been specializing in flow control area for more than 20 years. As a professional supply chain manager of flow control products, Ruidong flow offer gate,globe,check,butterfly,ball, JIS and DIN marine valves,strainers,actuators, flanges, pipes and fittings,with pressure range from 0.5-6.4MPA, size from DN15-DN3000, as well as valve design, inspection, consultation services etc.