Jiangsu PPH Flange Wholesale, Quote, Manufacturer's Phone Number [Jiangsu Jiayuan Pipe Valve Co., Ltd.] PPH Flange, full name Polypropylene Homopolymer Flange, is a pipeline connection system made from polypropylene homopolymer (PPH) material. This flange plays a significant role in industrial production due to its unique material properties and wide range of applications.