Glass fiber reinforced plastic anti-corrosion pipeline features FRP insulation anti-corrosion pipeline has the following characteristics: excellent mechanical and physical properties. The material density of FRP corrosion resisting pipeline is lower than that of traditional asphalt anticorrosion pipeline. The coefficient of thermal expansion is roughly the same as that of steel tube. The heat conductivity is only 40% of the asphalt anticorrosion pipeline, and it is a good thermal and electric insulator. The outer surface of FRP corrosion resisting pipeline has high strength and shock resistance, and it is not damaged in the course of transportation and construction, better than other anti-corrosion pipelines.
Chemical corrosion resistance, long service life. Glass steel anti-corrosion pipe made of glass fiber winding, polyester curing, good electrical insulation and chemical stability in contact with live medium, no electrochemical reaction, can prevent the external corrosion of buried pipe wall when the saline soil on corrosion, corrosion using epoxy powder coating or other anti-corrosion coating, prevent the corrosion of oilfield produced water.
Glass steel pipe with high strength and durability. The tensile strength of glass fiber reinforced plastic pipeline is as high as 588MPa.. The traditional mature installation technology can ensure the safe operation of the pipeline in the actual production of the oilfield.
The effect of field application analysis of glass steel anti-corrosion pipe application in Daqing oilfield two plant water injection line reconstruction project in 2001. A total of about 1km, these lines are in low-lying reed pond, soil in saline alkali soil, soil resistivity in the area is below 100*, the strong corrosive oil, soil thermal conductivity is 7. 521J/m*h. working medium saturation moist soil, about 10 times the heat unit equivalent to the general soil.
Original pipeline laying position of the natural environment is relatively poor, fiberglass insulation and anti-corrosion pipe used in the field, aims to verify the glass steel anti-corrosion pipe corrosion in the harsh environment, the evaluation of corrosion protection and insulation structure's overall performance and economic benefit.
Glass steel anti-corrosion pipe from corrosion of external soil environment, stable performance, long service life. The use of 20 years of FRP pipe, the indicators are not attenuated, but also can use 3050 years. In the laying of 1kmtoX5 pipeline as an example, the use of asphalt anticorrosive pipe, the design life of 15 years and the use of glass steel anti-corrosion pipe actual service life more than 30 years during which does not need to maintain the trap.
Detailed description of insulating insulation for overhead FRP pipes:
FRP insulated pipes resist acid, alkali, salt, sea water, untreated sewage, corrosive soil or groundwater, and the erosion of numerous chemical fluids. The service life of the pipe is longer than that of the traditional pipe, and the designed service life is more than 50 years. For sand sandwiched GRP pipes, they are more used in municipal and municipal transmission and distribution networks. Because it is non-toxic, tasteless, no rust, no two pollution on water quality, no corrosion, greatly prolong the service life, convenient installation and other advantages, therefore, by the hot spring, warm, open and drainage engineering welcome. The surface of FRP winding heat preservation pipe is clean and smooth, and it can not be polluted by the microorganisms such as shellfish, fungi and other microorganisms in the ocean or sewage, so as to increase the roughness, reduce the cross section of water and increase the maintenance cost. FRP pipes are free from these pollution and are clean for a long time. At the same time, because of its smooth inner wall and excellent corrosion resistance, it will not cause scale and microbial growth, effectively guarantee water quality and maintain the stability of water resistance. But the traditional pipe still exist after water resistance increases and the surface fouling phenomenon.
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