Steel wire mesh skeleton plastic composite pipe is a new improved steel skeleton plastic composite pipe. This type of pipe is also called SRTP pipe. This new type of pipe is made from high strength through model steel mesh skeleton and thermoplastic polyethylene as raw materials, steel wire net as reinforced skeleton of polyethylene plastic pipe, high density polyethylene (HDPE) as matrix, with high performance of HDPE modified bonding resin will wire frame with inner and outer layer of high density polyethylene closely together, So that it has excellent compound effect. The composite pipe overcomes the disadvantages of both steel and plastic, while retaining the advantages of both, because the high-strength steel reinforcement is encased in a continuous thermoplastic.
Steel wire mesh skeleton plastic composite pipe, the use of high quality material and advanced production technology, so that it has higher pressure performance. At the same time, the composite pipe has excellent flexibility, suitable for long distance buried water supply and gas pipeline system. Polyethylene electrofuse pipe is used for steel wire mesh skeleton polyethylene composite pipe. When connecting, the inner heating body of pipe fitting is used to melt the outer plastic of pipe and the inner plastic of pipe fitting, so that the pipe and pipe fitting are connected together reliably.
I. Materials used
HDPE(polyethylene) material properties
Polyethylene has been successfully used for many years for safe delivery of drinking water and wastewater, hazardous waste, and compressed gases.
High density polyethylene (HDPE) is a white powder or granular product. Non-toxic, tasteless, 80% ~ 90% crystallinity, softening point 125 ~ L 35℃, the use of temperature up to 100℃; The hardness, tensile strength and creep properties are better than those of LDPE. Good wear resistance, electrical insulation, toughness and cold resistance; Good chemical stability, at room temperature, insoluble in any organic solvent, acid, alkali and various salts corrosion.
Characteristics of two.
1. Overcome the phenomenon of rapid stress cracking of plastic pipe, because the structure of steel and plastic are composite of these two materials, so there will be no plastic pipe difficult to overcome the rapid stress.
2. More than ordinary pure plastic pipe strength, rigidity, impact resistance, similar to steel pipe low linear expansion coefficient and creep resistance characteristics;
3. Light weight, easy installation, pipe connection using electric fusion joint, strong axial tensile resistance, mature and reliable connection technology, pipe fittings varieties and specifications.
4. Complete development, can be connected with other kinds of pipeline, valve equipment;
5. Double-sided anticorrosion, with the same anticorrosion performance as plastic tube, and the use of high temperature and corrosion resistance, low thermal conductivity;
6. Excellent structure, the reinforcement skeleton and inner and outer layer of the pipe are mutually contained into a whole, without the worry of inner and outer layer of the plastic and the reinforcement body peeling;
7. The inner wall is smooth, without scaling, and the water head loss of pipe is 30% lower than that of steel pipe;
8. The whole pipe is designed according to the service life of 50 years;
9. By adjusting the diameter of steel wire, the thickness of plastic layer, etc., to produce pipes of different pressure levels.
Three. Application scope
Steel wire mesh plastic composite pipeline is a new type of excellent performance pipeline, widely used in oil fields, power plants, chemical and petrochemical enterprises, water companies, municipal gas, seawater utilization pipeline and other fields.
Steel wire mesh skeleton plastic (polyethylene) composite pipe and fittings standard:
Urban construction industry standard OF the People's Republic of China CJ/T 189-2007 steel wire mesh skeleton plastic (polyethylene) composite pipe and fittings.
National standard of the People's Republic of China GBT 32439-2015 Steel wire mesh reinforced polyethylene composite pipeline for water supply.
Four. Steel wire mesh skeleton plastic composite pipe application field
1. Municipal engineering: urban building water supply, drinking water, fire water, heat network backwater, gas, natural gas transmission, highway buried drainage and other channels.
2. Oil field and gas field: oil-bearing sewage, gas field sewage, oil and gas mixture, second and third oil recovery and gathering and transportation process pipe.
3. Chemical industry: acid, alkali, salt manufacturing industry, petroleum, chemical, chemical fertilizer, pharmaceutical, textile, printing and dyeing, rubber and plastic industries to transport corrosive gas, liquid, solid powder process pipe and discharge pipe.
4. Power engineering: process water, backwater, water supply, fire water, dust, waste slag and other pipelines.
5. Metallurgical mine: used for transport of corrosive medium and pulp, tailings, ventilation pipe and process pipe in nonferrous metal smelting.
6. Sea water transportation: sea water transportation of desalination plants, seaside power plants and port cities.
7. Shipbuilding: ship sewage pipes, drainage pipes, ballast pipes, ventilation pipes and so on.
8. Agricultural irrigation: deep well pipe, filter pipe, culvert conveying pipe, drainage pipe, irrigation pipe, etc.
