a, oil field
(1) high pressure pipe
high pressure pipeline of oilfield is mainly including water injection pipe and pipe, pipe diameter is small, mostly within the scope of the (~ 200 mm, the pressure is high, generally between 5 ~ 30 mpa, for glass fiber reinforced plastic, harsh conditions, domestic fiberglass products performance is difficult to meet the requirements, glass fiber should be used for the production of such pipe imported from abroad. at present, only a sino-foreign joint venture harbin frp products co., ltd., in the domestic production of such pipe. smith, and applied in oilfield since 1994, has successively for daqing oil field, jilin oil field, shengli oilfield, changqing oilfield, liaohe oilfield, etc. provides a few tens of kilometers of high pressure frp pipe.
(2) medium and low pressure frp pipes
oilfield production process used in a large number of pipeline, 80% of the pipe is used for conveying high water cut oil, mixed oil and gas and oil field produced water. due to the oil field sewage medium harsh conditions, such as shengli oilfield produced water, the salinity of 5.7 x 104 mg/l, chloride content can be up to 3 x 104 mg/l and also, co2 dissolved oxygen, sulfide and other corrosive substances and sulfate-reducing bacteria, therefore, to serious corrosion of the metal pipes. choose fastest steel pipeline in 3 months after the production started perforation , the scrap is often the case in a year. so, shengli oilfield in 1983 began to try to use with good corrosion resistance of glass fiber reinforced plastic pipeline as a substitute to steel tube, not in the 80 s, early 90 s, filament winding frp pipe in mass production in our country, soon is well accepted by the oil field, the domestic several big oil fields, such as shengli oilfield, liaohe oilfield, zhongyuan oilfield, daqing oilfield, karamay oilfield, jianghan oilfield, etc are adopted in low voltage winding frp pipe, pregnancy, oil field, jiangsu jiangdu oil fields in qinghai, hebei huabei oilfield, but also to a varying extent in golmud in qinghai oilfield, etc used in the low voltage winding frp pipe. pregnancy in qinghai oil field in 1990 alone the use of the 20 km, shengli oilfield during 1991 ~ 1992, the only ground application engineering is used in nearly 30 km (7), which, in the past few years, oil field became an important application of frp pipeline market. oil field at present, the low pressure in use of glass fiber reinforced plastic pipeline has nearly thousand kilometers, most of the selection of pipe diameter between (~ 700 mm, the conveying medium temperature up to 78 ��, pressure is generally 0.1 ~ 1.6 mpa.
in order to ensure the winding frp pipe can better service for oilfield, oil field system together with the glass fiber reinforced plastic manufacturers and related design, scientific research institutes, held every two years "frp pipe in oilfield application technical meeting, china national petroleum corporation based on the practice field, with reference to the american petroleum industry association of frp pipe standard api spec 15 lr" specification for low pressure fiberglass line pipe "compiled" low pressure fiberglass line pipe specification, in order to further standardize and improve the winding frp pipe in our country oil field application.
second, the chemical industry
in our country, glass fiber reinforced plastic pipe in the 60 s took the lead in the application of chemical engineering, but at the time of glass fiber reinforced plastic pipeline mainly cloth belt winding and hand lay-up molding, seepage control performance is poor, so, a large number of promotion in the field of chemical industry has not been used, in 1988, harbin frp institute and other units to golmud in qinghai salt lake successfully processed the frp pipe conveyor bittern, dn 800 mm for the glass fiber reinforced plastic pipeline in a wide range of applications in the field of chemical industry pioneers and exemplary role. since entering the 90 s, glass fiber reinforced plastic pipe in the field of chemical application is more and more widely, although in a few occasions when frp pipe in use there have been problems, but overall good condition. so far, has been widely recognized in the field of chemical industry, the domestic many chemical enterprises or projects are a large number of chose frp pipes, such as: rings chemical companies in china, yueyang chemical factory, shanghai petrochemical fault-tree, jinhua chemical group, suzhou chemical group, hubei chemical plant, green chemical industry co., ltd. qingdao mountain, qinghai golmud jiafeichang etc and hubei huang mailing p project, meiyukou mine fertilizer project, chongqing titanium pigment, tongling jinlong engineering project. chemical field choose frp pipe is on the rise. according to the forecast, to 2000, the field of chemical industry need around 30000 t/a glass fiber reinforced plastic, among them, a large part of for pipeline, by 2010, used in chemical industry in the field of anti-corrosion glass fiber reinforced plastic will increase at an annual rate of teens, is growing faster than other areas, broad application prospects.
at present, the application in the chemical industry in the field of glass fiber reinforced plastic pipeline is mostly used for process pipeline and long distance pipeline. chemicals used in the field of glass steel pipe diameter usually small, mostly under dn800mm, ranging from atmospheric pressure to 4.0 mpa, temperature: - 40 ~ l00 ��. because many chemical factories, so, the medium conditions including acid, alkali, salt, solvent, acid and alkali alternately.
third, water supply and drainage
between shenzhen and hong kong in 1985, the laying of water pipeline, which purchased from britain for the hong kong side of the glass tube, diameter dn2200mm, dn1700mm respectively, total length 50 km, which is china's first use of glass fiber reinforced plastic pipe in water supply and drainage fields, in recent years, because of the food grade resin have mass production in our country, and stable quality, solved the glass fiber reinforced plastic pipes for water supply when the sanitary requirements, coupled with the emergence of grp sand pipe, reducing pipe production costs, so, glass fiber reinforced plastic pipes for water supply and drainage area is on the rise, the market competition is intense. reported: in 1994, 9 km long used dn800mm grand chemical industry zone of daqing west water to water pipeline, 1995, 5 km long water supply project in zigong city about 70 km and beijing municipal engineering dn900mm, dn700mm, dn600mm pipeline, 1996, 17 km dn300mm jilinyong ji long, dn400mm, dn600mm water supply pipeline, long shangzhi 14 km dn500mm, jilinnong ann 5.1 km long dn500mm water supply pipeline, panjin ethylene company 30 km long processing water pipes, and other such as dn600mm hangzhou city main water pipeline made in glass fiber reinforced plastic. in addition, hubei chung yang about 10 km long dn700mm drinking water pipeline are installed in jiangsu taicang city about 15 km dn1200mm district of glass fiber reinforced plastic drainage pipes are also under planning and construction.
used for water supply in the field of glass fiber reinforced plastic pipeline for medium and small, mostly used in drainage field most of the large and medium diameter, water pressure is very low, so, good corrosion resistance, light weight, easy installation, hydraulic performance, but generally cannot withstand the high pressure frp pipe (sand) is particularly applicable to the field. with the development of our country's economy, the development of municipal construction, glass fiber reinforced plastic pipeline will be more and more application in this field.
4, power stations
glass fiber reinforced plastic pipe used in power station began in the 80 s, at the end of at the time, tibet yambajan geothermal power plant to choose the japanese production of glass fiber reinforced plastic pipe used in cycle geothermal water; haikou power plant to choose the 24 m long, dn1600mm frp pipe cycle generator cooling water. later, in 1990, in 1992, tibet in yambajan geothermal power station in the second and the third phase of expansion again chose nearly 5 million yuan of frp pipe, pipe diameter ranging from dn500 to dn900mm, so far, these pipes used in good condition. in 1996, qinshan nuclear power station in the construction of phase ii, chose dn 1800 mm, dn2800mm frp pipe, the contract price of about 10 million yuan; in 1997, shenzhen west power plant dn100 selects nearly 2 million yuan ~ 2 million mm gauge seven kinds of specifications of glass fiber reinforced plastic pipeline, in addition, zhanjiang power plant, the baoji second power plant and other units also selects the glass fiber reinforced plastic pipeline.
power plant (factory) selects the frp pipe is generally used for circulating water pipe, chemical pipe, supply water, storm sewer, and seawater desulfurization tubes, its use is now on its beginning stage, but because in our country at present, construction of power stations (plants) quantity is limited, plus the many advantages of frp pipes have not recognized and accepted by electric power industry, so, in glass fiber reinforced plastic pipeline of the entire application, this section has not yet been occupy large market share, but there is a big market potential.
fifth, pull the corrosive gas chimney
glass fiber reinforced plastic pipeline is due to the overall forming, so, when used as a smoke chimney corrosive gas pull affordable smoke produced by negative pressure, won't produce layers; in addition, frp pipe is light weight, easy to assembly, and through the design can resist different wind and seismic load, anti-aging performance is also very good, so, frp pipe is a kind of ideal chimney with steel tubes. in 1991, gansu white engineering using 47 m high, 404 dn2800mm, dn3200mm chimney; 1994, huang mailing project of ammonium phosphate using 100 m high dn2200mm chimney; in 1995, hebei shenzhou ammonium phosphate plant and qinshan nuclear power plant will use dn3000mm chimneys are made from glass fiber reinforced plastic pipes. frp pipes are used for chimney, pull corrosive gas is one of the one who has a great potential market.
frp pipe in our country, except for the five application fields in paper making, leather making, food, ventilation and other fields also have different levels of use, the scope of use is becoming more and more widely. but all of these areas to choose the number of glass fiber reinforced plastic pipeline is limited, therefore, the application of frp pipes in these areas remains to be further development.