Large Diameter PE Drainage Pipe：Advantages & Connection

Posted on: September 17, 2021 by Madison Pipe Industry, 5 min read

Large Diameter PE Drainage Pipe Introduction

Large diameter HDPE Drainage pipes offer installation economy and long service life. They are tough, lightweight, shock and chemical resistant. The HDPE Drainage pipes are available in standard lengths of 3, 6, 12 and 14m. Special pipe lengths can be produced to meet almost any need.

Advantages of Large Diameter PE Drainage Pipe

Large diameter PE pipes for municipal works water supply and drainage pipelines should not only possess excellent rationality, but also have a series of advantages such as reliable simultaneous interpreting, raw materials resistance to impact, cracking resistance, aging resistance and corrosion resistance. Compared with the traditional cement drain pipe seamless pipe and spheroidal graphite pipe, PE pipeline system software has the following advantages:

  1. Reliable connection: electrothermal fusion is used in the middle of the pipeline system software, and the compressive strength of the connector is higher than that of the pipeline itself.
  2. Good ultra-low temperature impact resistance: during construction measures in winter, due to the good impact resistance of raw materials, it is not easy to produce pipeline embrittlement.
  3. Good in-situ stress cracking resistance: it has low vacancy sensitivity, high shear strength and excellent scratch resistance. It also has outstanding in-situ stress cracking resistance to natural environment.
  4. Good solvent corrosion resistance: the pipeline can resist the erosion of a variety of organic chemicals, and the compounds in the soil layer are not easy to cause all dissolution effects on the pipeline.
  5. Aging resistance and long service life.
  6. Good wear resistance: the wear resistance of pipeline and seamless steel pipe is 4 times that of seamless steel pipe according to the experimental results.
  7. Good flexibility: the flexibility of the pipeline makes it very easy to bend. In the project, the obstacles can be bypassed according to the way of changing the pipeline.
  8. Low water friction resistance.
  9. Convenient transportation.
  10. A variety of newly upgraded engineering construction methods: in addition to the traditional foundation pit excavation method for engineering construction, a variety of newly upgraded trenchless pipe jacking technologies, such as pipe jacking construction, item drilling, liner, pipe cracking and so on, can also be selected for engineering construction.

Large Diameter PE Drainage Pipe

Product Performance of Large Diameter PE Drainage Pipe

  1. Good hygienic Performance: PE drainage pipe is processed without adding heavy metal salt stabilizer. The material is non-toxic, has no scaling layer and does not breed bacteria, which well solves the secondary pollution of urban drinking water.  

  2. Excellent Corrosion Resistance: Except for a few strong oxidants, it can resist the corrosion of a variety of chemical media; No electrochemical corrosion.  

  3. Long Service Life: PE pipes can be safely used for more than 50 years under rated temperature and pressure.  

  4. Good Impact Resistance: PE drainage pipe has good toughness and high impact strength. Heavy objects directly press over the pipe, which will not cause the pipe to break.  

  5. Reliable Connection Performance: The strength of the hot-melt or electric fusion interface of PE drainage pipe is higher than that of the pipe body, and the joint will not be disconnected due to soil movement or live load.  

  6. Good Construction Performance: The pipeline is light, the welding process is simple, the construction is convenient, and the comprehensive cost of the project is low.  

  7. Electrothermal Fusion: Special electrothermal fusion welding machine is used to connect straight pipe with straight pipe and straight pipe with pipe fittings. Generally, it is mostly used for pipes below 160mm.  

  8. Hot Melt Butt Joint: Special butt welding machine is used to connect pipes, generally used for pipes above 160mm.  

  9. Steel Plastic Connection: Flange, screw thread and other methods can be used for connection.

Connection Method of Large Diameter PE Drainage Pipe

Electrofusion pipe fittings work through Joule effect, and use the mutual conversion of heating elements to convert electric energy into heat energy. At the same time, with the characteristics of pipe fittings, the pipe fittings also have great advantages in use, so it is widely used in the industrial field. Next, we will introduce the welding methods and process requirements of electrofusion pipe fittings.

Welding Method of Electrofusion Pipe Fittings

  1. In the process of fusion welding, the method of heating the weldment joint to the molten state and completing the welding without pressure is called fusion welding. Common fusion welding methods include arc welding, gas welding, electroslag welding, etc.

  2. During pressure welding, pressure must be applied to the weldment to complete the welding, which is called pressure welding. Common pressure welding methods include resistance welding, friction welding, arc welding, ultrasonic welding, etc.

  3. In the process of brazing, the metal material with lower melting point than the base metal is used as the solder. The method of connecting Weldments by heating weldments and solder to a temperature higher than the melting point of solder and lower than the melting point of base metal, wetting the base metal with liquid solder, filling the joint gap and diffusing with the base metal is called brazing. Common brazing methods include flame brazing, induction brazing, furnace brazing, salt bath brazing and vacuum brazing.

Welding Process Requirements for Electric Melting Pipe Fittings

  1. Scrape off the oxide layer on the welding surface of the pipe with, generally the scraping depth is 0.2 ~ 0.5mm. If the pipe fittings are too tight for socket assembly, the scraping amount can be appropriately increased, and the socket depth can be marked with a marker pen.

  2. Organic stains on the welding surface of pipe fittings and pipes must be removed before welding.

  3. Use a multimeter to check whether the pipe fitting is connected. If the coil of the pipe fitting is normal, install the electric melting pipe fitting into the pipe orifice at an appropriate depth, and then tap the periphery of the electric melting pipe fitting evenly with a hammer until the edge of the pipe fitting coincides with the identification line. It is forbidden to tap the power terminal.

  4. Check whether the fitting clearance of pipes and fittings is uniform and appropriate.

  5. The stains splashed on the welding area must be wiped clean during assembly.

  6. Fix the assembled joint and pipelines on both sides, keep the pipelines on both sides on the same axis, and ensure that the joint is not affected by any external force for welding.

Relate Read: Large Diameter PE Water Supply Pipe：Advantages, Application & Connection

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