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HDPE Pipe for Water Supply
  • HDPE Pipe for Water Supply
  • From:Ginde   AddDate:2017-06-06 14:05:33    View:

  • I.Product introduction of Ginde hdpe pipe for water supply
    1. Properties of Ginde hdpe pipe for water supply
     
    The polyethylene water supply pipe is a new product formed from extruding, taking the high quality polyethylene resin as main material, adding necessary assistant such as antioxidant, ultraviolet absorber and so on. The polyethylene water supply pipe has application history of forty years in abroad. It is perfect choice in many pipelines by the approving of practice. It can be used widely in many kinds of pipeline projects with the working pressure of 0.32MPa~1.6MPa and the working temperature of -20oC~40oC, such as municipal water supply, drainage, petrochemical industry, mine, irrigation of agricultural land, drain contamination, mortar transportation, landfill of refuse and so on.
    The "Ginde" brand high density polyethylene pipeline made of inward material by Ginde group has many advantages, such as good chemical performance resistant, good electric insulation, corrosion proof, no rust, convenient for construction, quick maintenance and so on. The water supply tubing is produced and accepted according to the GB/T13663-2000 "Polyethylene (PE) tubing for water supply"  Through the spot checking of the national plastic product supervision checking testing center, the "Gind" brand polyethylene water supply pipe has reached or exceeded the national standard reques
    2. Major technical indicators of Ginde aluminum plastic composite pipe
    Breakage coefficient of extension                   ≥350
    Longitudinal recovery ratio(110℃)%                      ≤3
    Oxidation induction time (220℃)min                       ≥20
     
       Weather resistant    80 ℃ silence hydaulic pressure   No breakage,no leakage
                                Intensity 165h
    (after receiving 3.5GJ/m2  Breakage coefficient of                ≥350
     in count by the tubing)      extension%
                         Oxidation inductiion time        ≥10
                               (200℃)
    1The advantages of the PE tubing
     
    1.Excellent physical characteristics
    The inward high quality polyethylene used by the Ginde polyethylene water supply tubing has good rigidity and intensity, and also has good suppleness and anti-creep, and the hot-melting performance is good, which is convenient for the mounting of the plastic pipeline.
    2.Corrosion resistant, long lifespan
     In the coastal areas of our country, the ground water level is higher, the ground humidity is great, the seamless steel pipe must be used to prevent corrosion, and the lifespan is only 30 years. And the PE pipes can proof corrosion many chemical mediators, without need for the corrosion proof treatment. In addition, it will not improve the alga, bacteria or epiphyte growing. The lifespan can reach up to 50 years under the normal condition.
    3.Good toughness and suppleness
    PE pipe is high toughness tubing, the breaking extension of which exceeds 500%. It has very strong adaptability to the dropping with uneven base and dislocation, good shock resistance. So it is suitable to apply in the area with earthquake dangerous. It has proved by the practice all of the world that the PE pipe is the pipeline with excellent shock resistance.
    In addition, the suppleness of the PE pipe make the PE pipe coil up (especially the PE pipe with small pipe diameter), which decreases a lot of connection pipe fittings. The direction of the PE pipe is easily changed according to the requirements of the constriction method. In construction, the allowable bending radius of the pipe can bypass obstacle, which can decrease the construction difficult.
    4.Great negotiability and economical
    The inner wall of the PE pipe is smooth, no crust. The equivalent absolute rough radio of the inner wall is 1/20 of the steel.
    The negotiability of the PE pipe under the same pipe diameter, same length, the same pressure is about 30% more than that of the steel pipe, so the economic advantage is obvious. Compared with the metal pipeline, the PE pipeline can decrease about one-third of the project investment (the cost of the pipe with the diameter more 2000 mm). The small bore tubing which can be coiled up can decrease the construction cost further.
    5.Convenient for connection, easy to construct, many methods
     The PE pipe is light, convenient for transportation, easy to weld; the weld-throat section is few. When the pipeline is longer, the requirements for the PE pipe laid by the coil pipe (namely the pipe with the diameter less than 63mm generally) is much lower than the steel pipe. In addition, the method of the pipe dropping can be adopted for laying under water, decreasing largely the constructional difficult and project cost.
    6.Good sealing performance
    The PE pipe adopts the melting connection, guaranteeing the identity of the joint material structure and the pipe body, realizing the integration of the joint and the tubing. The tensile strength and burst strength are both higher than the pipe body, which can effectively resist the ring stress and axis stress from the inner pressure. Compared with the rubber joint or other mechanical joint, there is no the leakage dangerous of the distortion joint, the sealing performance is perfect.
    7.Convenient for maintenance, can be repaired and mounted without stopping the water and gas
    8.Good stress resistant craze performance
    The PE pipe has low gap sensitivity, high shear strength, excellent scar resistant ability and outstanding environment resistant stress,
    9.Good low temperature shock resistance;
    The low temperature brittle temperature of the polyethylene is very low, can be used in the temperature range between -20~40oC. When constructed in winter, because of good shock resistant performance, the pipe will not brittlecrack.
    10.Good abrasion resistance
    It can show from the abrasion resistance performance test of the polyethylene pipe and the steel pipe: the abrasion resistance of the polyethylene pipe is four times of the steel pipe.
    11.Low flow resistance
    The inner wall of the PE pipe is smooth. The smooth inner wall and the non- adherence performance can guarantee the transmitting capacity of the PE pipe is higher than traditional tubing, and at the same time decrease the pressure loss of the pipe and water transportation energy consumption.
    12.Many new constructional methods
    Besides the traditional constructional methods,  the PE pipeline also has many constructional methods, such as top pipe, directional drilling, conduit, crack pipe and so on, which is the only choice fro some place where the digging is not allowed, so the PE pipeline is more widely used.
    Constructional regulations
     
    1. General regulations
    1.0.1This regulation is made for mounting and using reasonably polyethylene (PE) tubing and pipefitting in the design construction and acceptance regulation of the outdoor buried polyethylene water supply pipeline project, reaching that advanced technique, economical & reasonable, convenient for construction, safe & applicable and guaranteeing water quality.
    1.0.2This regulation is suitable to the design, constructional acceptance of the new built, rebuilt or expand outdoor buried polyethylene water supply pipeline project. The applicable range is the outdoor water supply pipeline that the nominal pressure of the tubing is less than 1.6MPa, the pipe diameter is less or equal to 630mm and the water transportation temperature is 0~40.
    1.0.3The water supply tubing should meet with the national standard GB/J 13663-2000, the pipe fitting should meet with the European standard.
    1.0.4The unit carrying on the design and construction of the polyethylene water supply pipeline project must have corresponding qualification approved by the constructional main government; the pipeline project must be done according to the document and constructional drawing; the changing plan should be agreed by the design unit.
    1.0.5 This regulation can be used for the corrosive oil such as acid, alkali; for area with the settlement by soaking soil, expansive soil, permafrost soil and so on special soil layer, the corresponding regulations of the professional and national standard should also be met with.
    1.0.6Besides this regulation, the design, construction and acceptance of the polyethylene water supply pipeline project should also meet the national standard "Outdoor water supply design regulation"and the relevant regulations of the exiting quality, safety, fireproof and heath specification.
     
     
     
    II.Application range of Ginde aluminum plastic composite pipe
     
    As the PE pipeline has above advantages, so it can be used in following area:
    (1)Town water supply
    With integrative advantages of safe, heath and continent for construction, the PE pipeline has been the perfect tubing for the town water supply.
    (2) Food, chemical industry area
    With the unique chemical corrosion performance, the PE pipe can be used in the transportation and emission of many acid, alkali and salt solution, the working life is long and the cost and the maintenance discharge is low.
    (3) Argillaceous silt, mud transportation
    The abrasion resistance of the PE pipeline is four times of the steel pipe, so it can be used to transport the argillaceous silt, pulverized fuel ash of the power plant, mud accumulated in the river way.
    (4) Replace the cement pipe, cast iron pipe and steel pipe
    To reform the cement pipe, cast iron pipe and so on lay previously, without digging in large area, the PE pipe can be inserted into the old pipe for replacing, low constructional cost, short constructional time, it is suitable for the reformation of the old city especially.
    (5) Garden green pipe network
    The garden green needs lots of the water transportation pipeline, as the cost of the PE pipeline is very low, it is worthy to be improved widely.
     
     
    III.Production technique of Ginde hdpe pipe for water supply
     
    1. Production equipment
     
    The German hdpe pipe for water supply production line, which is the most advanced production line at present internationally, has been completely introduced by our company. Many advanced techniques have been adopted, such as extrusion together with the five layers, ultrasonic lap welding, etc. Compared with other production lines of aluminum plastic composite pipe, it mainly boasts the following five major advantages:
     
    1)Ultrasonic welding: ultrasonic welding technique has been used at the joint of aluminum band, which leads to a large welding area of aluminum band and high welding strength;
     
    2)Extrusion together with the five layers: compared with other coating process, the hot-melting adhesive has a excellent fluid performance, thus a high adhesive strength betweenaluminum layer and plastic is obtained;
     
    3) On-line inspection with pressure forced inside the pipe: A pressure ranged
    between 0.6~0.8 MPa is forced on line, Adhesive strength is increased as the aluminum layer and plastic tightly adhere with each other. The pipe would crack on spot in case of existence of defect on welding. Therefore,up-to-standard rate out of factory may reach 100%;
     
    4)Synchronizing controller: computer control is used along the complete production line, thus uniform and reliable product quality is able to be realized;
     
    5)Optical inspection instrument: inspect outer wall mass and outer diameter of  the pipe on-line, increasing product precision.
    2.Raw material
     
    Raw material of Ginde company are all imported from famous manufacture in North AmericaEurope. Major suppliers include The Dow Chemical Company in America, Philips in America, Polyplast in Germany, DSM in Holland. Etc. Major raw material, such as polyethylene DOWLEX2344 is tested by Karlsruhe water quality test station, which would prove that pipe made of such material is suitable to be used for drinking water; data list on material safety provided by DSM Company shows that hot melt adhesive Ypares produced by the company has neither toxicity nor hypersensitivity after long term utilization. In addition,Ginde aluminum plastic composite pipe does not have heavy metals such as mercury, lead, durin production. It is clean and friendly to environment.
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