The glass steel sand inclusion pipeline 

 Filament winding the RPMP reliability, security and economic, is mainly used for buried pipelines and long-distance pipeline, has a lightweight, high strength, corrosion resistance, long life and low running and maintenance costs, for construction The project to save a lot of money. 
 First, the characteristics 
 The lightweight, high strength: RPMP pipeline specific gravity of 1.65 to 2.0. Per unit length for the same diameter, only 1/3 of the carbon steel, FRP pipe is only 1/5 of the cast iron pipe, prestressed concrete pipe, 1/10, in the construction to reduce lifting costs, improve the speed of installation . 
 2, the hydrodynamic characteristics: This feature is particularly prominent in the field of water supply and drainage, the hydraulic characteristics. 
 (1) pipe network can save pumping costs. (2) reduce the diameter size. (3) to shorten the pumping time. 
 (4) of FRP pipe to long-term water transfer does not scale, do not need to clean up the water from the secondary pollution. 
 3, water resistance to corrosion: Glass Reinforced Plastic pipe excellent corrosion resistance, reduce corrosion costs, extended service life; because they do not rust, so that the quality of water conveyance from the secondary pollution. Can also be used to transport sewage, mud, water and other media. 
 4, pressure: the pressure of process requirements, design, manufacturing, pipe and pipe fittings, hydraulic pressure test to 1.5 times the pressure of process requirements. 
 5, the interface seal, no leakage, not rupture, increase water supply security and reliability. 
 6, non-toxic and can be used to transport drinking water.