Jizhou Zhongyi FRP CO., LTD Sand filled pipe is consisting of resin(selec food grade resin for transmitting drinking water), glass fiber and quartz sand. Using a special process. It’s operating temperature is below 80℃, suitable for various soil. Suitable field: 1. potable water transmission, 2. sewage disposal. 3. seawater transmission. 4. power plant circulation water piping. 5. chemical corrosion media transmission. 6. oil and gas transmission. 7. agricultural irrigation. sales1@jzfrp.com