Features
Distinguished physical property
The specific gravity of FRP is 1.8-2.1g/cm3, only 1/4 of steel or cast iron, the specific strength is higher than steel, cast iron and plastics. The weight of a FRP pipe is generally not more than 1/3 of that of the same specification of a steel pipe, and the physical and mechanical properties are excellent. In addition, the expansion coefficient of the FRP pipe is roughly the same as that of steel, and the heat transfer coefficient is only 0.5% of steel, so that FRP pipe is a good thermal and electric insulator.
Good property for chemical resistant and ageing proof
It is suitable for conveying different fluids, such as acidic, alkaline, saline and organic solvents
Excellent hydraulic characteristics
The hydraulic characteristics of FRP pipe is one of its most important properties, excellent hydraulic characteristics means that less head loss. It is possible to use a smaller diameter pipe to replace the larger pipe to get the same conveyance volume. The surface roughness is 0.008 only, during the operation, no corrosion occurs, the inner surface always keep smooth; but for the steel, cast iron and concrete pipe, it becomes very thin due to the occurrence of sectional corrosion.
Low cost for installation and maintenance
Normally, there is not special treatment for FRP pipe, the insulation layer can be reduced, even can be omitted; light weight, the capacity of lifting device is small, save the power consumption; the length of FRP pipe can reach 12m, is longer than the other pipes, the quantity of the joints is less, all the above items make FRP pipe low cost in installation and maintenance, and it have been proved by many practical projects.
High agility of design and good property of lamination
FRP is made by a fiber reinforced mateial impregnated with a resin matrix onto a mandrel according to specific process conditions and curing properly. The pipe wall is a layered structure. the physical and chemical properties of FRP pipes can be adjusted through a resin system or with different reinforcements to suit different media and work conditions, and produce FRP pipes with different pressure ratings or some special properties.
Application
Conveyance for chemical mediums.
Process pipelines for chemical industry, paper-making, sewage treatment, desalination of seawater, food and drink processing and drug industry, etc.
Arterial pipes and distribution pipes for drinking water.
Pressure water pipes for small hydropower stations on the ground, circulating water pipes for power plants, sewage collection and carrier pipes.
Water injection pipes for oil fields and crude oil conveyer pipes.
Conveyer pipes for thermal energy and seawater.
Agricultural irrigation pipes.
Vacuum pipes, external pressure vessels and siphon tubes.
Formation process
While the inner liner has been prepared, make the structural layer per the designed linetype and thickness under the control of the computer, make the outside protective layer finally.
Parameter of FRP pipes
