... requirementPicture: Company profile: Established in 1980, HeBei RuiYuan Pipe FittingCO.,Ltd, is located in Yanshan Industrial Zone, ... include elbows, reducers, tees, flanges, big elbows,socket pipe, concrete pumps and pipes, concrete pipeline, various groud pipes ... , horizontal tubes, straight pipe, cone pipe, bend pipe, rubber ring, cleaning ball, cleaning post with many ...