FRP sand-filled pipes have low installation and maintenance costs. Generally speaking, FRP sand-filled pipes do not require special anti-corrosion treatment and the insulation layer can be thinned, or even without additional insulation treatment. The pipes are lighter, the hoisting equipment has a small tonnage and low power consumption. FRP The length of sand-filled pipes is longer than that of cement pipes and cast iron pipes, and there are relatively fewer joints, which will reduce installation and maintenance costs. This has been proven by many engineering practices at home and abroad.
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