Jizhou Zhongyi FRP CO., LTD the Fiberglass Reinforced Plastic (FRP)Pipes and sand-filled pipe are mainly used in such fields as water conservancy, sewage, petroleum, chemical industry, electricity, metallurgy, pharmacy, etc, Inside diameter: DN25-DN4000mm, length: 1m, 3m, 6m, 12m;  Pressure: 0.1Mpa, 0.6Mpa, 1.0Mpa, 1.6Mpa, 2.5Mpa; Applicable standard: ASTM D2996, AWWA C950, AWWA M45, ASME B31.1, ASME B31.3, BS6464, etc,