China ISO Standard ISO4427: 1996/GB/T13663-2000, HDPE Pressure Pipes Used in Gold Mine, Dn450mm, SDR26, Pn6, En17.2, Find details about China Hdpe Pipe, Polyethylene Pipe from ISO Standard ISO4427: 1996/GB/T13663-2000, HDPE Pressure Pipes Used in Gold Mine, Dn450mm, SDR26, Pn6, En17.2