GRP pipes
GRP pipes (Glass Reinforced Polymer Pipes) are known as composite pipes which have been used in various infrastructures due to the latest advances in composite and Nano-composite technology.
Nowadays new technologies in pipe manufacturing methods have provided the possibility of producing the pipes with better performance and lower cost.
Since Faratec GRP pipes have the superior technology compared to the other GRP pipes, they ‘re now used as the best option in large-scale projects around the world.
New Faratec composite pipes are good alternatives for different pipe types such as stainless steel, carbon steel, ductile iron and Cupper Nickel- Titanium alloy.
Due to their very high mechanical strength, complete resistance against corrosion effect of the chemical and alkaline fluids, and also their low cost in comparison with steel pipes, GRP Faratec pipes could be used in stead of steel pipes.
GRP pipes advantages
GRP pipes reduce the cost of the project significantly and have the following advantages:
- Reducing hydraulic loss by reducing Manning’s roughness coefficient
- Minimizing the likelihood of an undesirable hydraulic jump in inlet of the siphon
- Reducing cost, risk and duration of installation
- Ease of installation of GRP pipes compared to other types of pipes
- Ability to use anti-abrasion additives in the structure of the GRP pipes to minimize the effects of abrasion caused by the entry of sediment into the siphon conduit
- Cleaning and draining sediments from the inverted siphon will be facilitated due to easy branching and installing drain valves
Standards
Standards developed by Norsak, DIN, ISO, API, ASTM and etc.
AWWA and ISIRI standard, are applied to a variety of Faratec pipes applications including drinking water transmission, sanitary systems, conveying different fluids, industrial waste, chemicals and etc.
ASTM standard there are several ASTM product standards in use which apply to a variety of fiber glass pipe applications.
API 15 HR, API 15 LR and ISO 14692 standards are applied to the investigation and selection of fiberglass pipes used in the petroleum industry.
TS, EN and ISO standards, DIN 16868 and BS 5480 have been updated by new EN standards.
ASME and AWWA standards including AWWA C950 which is one of the most comprehensive product standards for GRP pipes which applies to the use of pressurized water pipelines with full specifications for pipes and fittings.
Qualification tests
Qualification tests are required in accordance with international standards. These tests are said to be long-term because their duration lasts around 10,000 hours (approximately 1.5 years). Qualification tests are carried out for three main objectives:
- Determination of the long-term mechanical properties of the raw materials used in the pipe structure. It should be taken in account that long-term mechanical strength of 50 years is determined by qualification tests.
- Gaining results for designing GRP pipes with a useful lifespan of 50 years
- Performing re-qualification tests to confirm that the raw materials have a consistent formulation and quality (once every 1.5 years)
Capabilities of Faratec pipes
Faratec GRP pipes, due to their various technical and economic advantages, including strong structure, light weight and especially high corrosion resistance, smooth inner surface and very high mechanical strength, long lifespan, easy and fast installation are worthy of consideration as a superior pipe generation in comparison with other pipes. Especially, because of their economical price which makes them considerable options of inverted siphons.
- The short-term advantages of GRP pipes for inverted siphons are:
Slight weigh, low price of purchase, transformation and installation.
- The long-term advantages of GRP pipes for inverted siphons are:
Minimum 5O-year useful lifespan, constant roughness coefficient along lifespan of the pipes, no need to protection methods like inner and outer coating or cathodic protection.
The use of GRP pipes in comparison with other types of pipes minimizes corrosion effects and provides structural health during operation.