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Ductile iron pipe
(NS-type joint)
Ductile iron pipes have the corrosion resistance of cast iron and almost the same strength and ductility of steel. Because of their high reliability, ductile iron pipes are widely used in pipelines to convey potable water, sewage water, agricultural or industrial water, gas, etc. Recently, there has been a strong demand for earthquake-resistance ductile iron pipes, especially those employing NS-type earthquake resistance joints, with about 50 percent of our current domestic-oriented shipments being earthquake-proof piping. |
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Ductile iron pipe (US-type joint)
US-type joints allow assembly from inside the pipe. Ductile iron pipes using US-type joints are suited for piping applications in tunnels, shields, and narrow trenches. |
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Earthquake-resistant water storage tanks for emergency
Large-diameter pipes are connected to the water main (usually as a bypass) and used as a storage tank to support human life and fire fighting efforts in the event of an emergency. At normal times, this tank functions as an ordinary water distribution pipe. When the main is damaged or destroyed by earthquake or other occurrence, this pipe is isolated by valves from the main to prevent water inflow and outflow. This allows the pipe to be used as a water tank, providing the means of obtaining water in an emergency. |
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FW pipe
The FW pipe, a fiber reinforced plastic pipe consisting of FRP and resin mortar, is used for pipelines carrying agricultural or sewage water. Since FW pipes are strong and have excellent hydraulic characteristics, corrosion resistance, earthquake resistance, and workability, they are widely utilized in both new construction and renovating applications. |
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