Restrained Coupling for PE PVC pipe is designed for PE pipe and PVC pipe, it can lock the pipe after installed. Restrained Coupling -- for PE PVC pipe specification for ... ;PE280338PVC;PE315348PVC;PE Livia Wang Qingdao Valtech Manufacturing Co., Ltd.Jihongtan Town, Chengyang District, Qingdao, Shandong Province, China Restrained Coupling for PE Pipe