... PPR (Hyosung,Borealis,Yanshan)2. Pressure Grade: S3.2(PN2.0Mpa), S2.5(PN2.5Mpa).3. Connection: Hot Welding ... , no heavy metal additives, directly apply to the water supply system.2. Corrosion resistant, not scaling ... PPR (Hyosung,Borealis,Yanshan) Mould samples of PPR Pipe FittingOur Production LinePart of Test ProcessPackaging Sample (38x30x27mm, or 38x25x20mm) ppr pipe fitting for construction and ...