Supplier evaluation strength (BV authentication)

FRP pipes

frp pipe compared with other pipeline sand:
1 roughness coefficient
Prestressed concrete pipe: 0.013 steel tube: 0.011 FRP pipes: 0.0084
2 single length
Prestressed concrete pipe: 4-6CM steel tube: was of FRP pipes: 50-70 years
4 corrosion resistance
Prestressed concrete pipe: should do anti-corrosion measures, and do cathodic protection. Steel pipe: corrosion resistance is poor, need to do a lot of anti-corrosion processing. FRP pipes: very good, need not do anti-corrosion measures.
5 safety
Prestressed concrete pipe, non-toxic, non-polluting on water quality. Steel pipe: existence rust problem, of water pollution. FRP pipes: conform to the state standards for drinking water.
6 joint form
Prestressed concrete pipe: flexible rubber ring seal. Steel pipe: welding. FRP pipes: double O sex circle seal, socket connection.
7 joint whether can deflect
Prestressed concrete pipe: can't. Steel pipe: can't. FRP pipes: can deflect 3 degrees.
8 can joint testing
Prestressed concrete pipe: can't. Steel pipe: can't. FRP pipes: sure.
9 installation rate
Prestressed concrete pipe: slow. Steel pipe: slower. FRP pipes: very fast.
10 tube blasting phenomena
Prestressed concrete pipe: yes. Steel pipe: yes. FRP pipes: no.
11 maintenance
Prestressed concrete pipe: inconvenience. Steel pipe: inconvenience. FRP pipes: generally don't need maintenance, if need to repair is very convenient.
Application:
1 water supply project
-- urban water supply system construction.
- town original supply pipe transformation.
- irrigation.
2 drainage sewage system
- city drains.
- industrial sewage pipe.
-- other drain pipe. Coastal or reclamation made towns across the, mines, the airport, seaport, road crossing project used to eliminate the rain and sewage pipe, can consider to use acid and alkali resistant, occupies little space, large flow, transportation, dig the fill light small amount of RPM pipeline.
3 water conservancy, electric power project
- culverts engineering. Used for dyke, channel, road crossing, can be directly laid drainage culverts buried RPM tube.
- pour region and pressure aqueduct. Irrigation channels across the river, depression, can use RPM tube constitute pour region or aerial pressure aqueduct.
- tunnel project. Artificially tunnel lining, such as using RPM pipeline construction can be used as a mold shell (super dig with concrete or part QiShi grouting filling), because the wall, can increase smooth flow 20%, the excavation tunnel or dam under buried tube if use RPM conduit "pipe jacking method" construction, more can well begun is half done.
The reinforcement of original culverts -- reservoir.
The pressure conduit -- mountain hydropower station.
- of the hydropower station cooling sea water pipes.
4 industrial
- corrosive fluids is conveying. All forhandling corrosive liquid, gas industrial piping, such as strength inside bigger and must use corrosion of metal materials, easy priority choose RPM pipeline.
- oil industrial piping. Used for oil and gas transmission, oilfield backwater, etc.
- sea construction work pipeline.
- heat-supply pipeline. RPM pipe for excellent thermal insulation, heat preservation performance is very good, unsuited are used for transport steam, geothermic water etc heat-supply pipeline.
Ventilation piping. Instead -- Used in large scale underground mines, especially the ventilated exhaust hole assignments. In large hotels, can according to decorate and beautification of flexible need, as the central air conditioning system of transmit gas pipeline.