GRP pipe 1.ISO09001, ISO14001, ISO18001,CRAA. 2.No pollution, no leakage ... sand pipes.Specifications of GRP filament winding pipes:1. Diameter: 25mm~4,000mm.2. Length: 6m/12m per pipe.3. Pressure: Middle and ... :1. Diameter: 300mm~4,000mm.2. Length: 6m/12m per pipe.3. Pressure class: 0.1MPa, o.6MPa , 1.0MPa , 1 ... lines.4. Corrosive fluids lines.5. Sea water lines. GRP pipe for sewage water