PE pipe common specifications:
Convey20℃Pure waterCAvailableCmin＝1.25
PE63Allowable design stress limit5Mpa，PE80Allowable design stress limit6.3Mpa。
PE Pipe Features:
1Corrosion resistance
Polyethylene is a non-inert material that can withstand the侵蚀 of a variety of chemicals, except for a few strong oxidizing agents, and is also not prone to bacterial growth. As is widely known, the reason plastic pipes have replaced steel and cast iron pipes, such as steel pipes, is not only because of...Pipe materialsLower water conveyance energy consumption, lower domestic energy consumption, lighter weight, less water flow resistance, easy and quick installation, lower cost, longer lifespan, with thermal insulation features, and also due to the superior properties of plastic pipes such as corrosion resistance and less prone to microbial growth, compared to steel and cast iron pipes.
2Toughness
Polyethylene boasts unique flexibility and excellent scratch resistance. The flexibility of polyethylene pipeline systems holds significant technical and economic value. The flexibility of polyethylene is an important property that greatly enhances the material's value for pipeline engineering. Good flexibility allows polyethylene pipes to be coiled and supplied in longer lengths, thus avoiding a multitude of joints and fittings.
3Low-temperature resistance
Polyethylene boasts exceptional low-temperature resistance properties.peThe low-temperature embrittlement point of the pipe is -70℃PVC is superior to other piping options. When conducting outdoor construction in winter, PVC...PVC－UThe pipe is prone to cracking, and in Beijing, China, we lay polyvinyl chloride (PVC) piping.PVC－UOne experience summed up from the pilot project of buried ground water supply pipelines is that it is not suitable to install polyvinyl chloride (PVC) pipes below freezing temperatures.PVC－UPipe installation construction has commenced.
4Fracture toughness
Polyethylene boasts excellent rapid crack growth fracture toughness. When rapid crack growth damage occurs, the cracks can...100～45m／sRapid expansion over several hundred to several kilometers can lead to damage in long-distance pipelines, massive leakage incidents, and subsequent combustion or explosion (in the case of natural gas transmission) or flood (in the case of water transmission) accidents.
Strive for wall thickness and nominal pressure:
PETubingStandard sizes typically range from16mm-1800mmBefore heading to the market, the nominal outer diameter is definitely confirmed, but in addition to the diameter, there is also the option of wall thickness, varying for different diameters.PEThe wall thickness for the corresponding pipes also varies; some are thicker.5Thicker walls correspond to higher nominal pressure ratings.
Appearance Evaluation Performance:
PETubing is a recyclable and eco-friendly pipe, but the properties of recycled material (regrind) are still somewhat inferior to those of virgin material, and to some extent, it may not meet quality standards. Excessive use of regrind can lead to issues such as uneven coloration, uneven surfaces, bubbles, and rough pipe walls. It's advisable to avoid such piping when making a selection.
National Standard & Brand:
National Standard:PEThe "national standard" referred to here is the national standard in accordance with the Chinese standard.GB/T 13663-2000Qualified steel pipes on the market are all marked with inspection criteria for comparison against national standards.
Brand: The price of pipe materials that meet the national standards can vary greatly; this might be due to the brand effect. However, pipes that comply with national standards can meet normal construction standards.PEPlease provide the Chinese content you would like translated into American English.“National Standard”The first brand in the industry.
Selection Tips for PEX Tubing
PEThe quality and superiority of pipe products mainly depend on the raw materials, processing equipment, and processing techniques.
How to Select High-QualityPEConsider the following aspects?
1Inspect the appearance
High-quality PEThe inner and outer surfaces of the pipes in raw material production are smooth, even, free of bubble indentations, and without color spots or other defects, whereas inferior products typically have more granular impurities, and the inner and outer walls are not smooth, featuring lumps.
2Milling Strip
Cut-offs from machine tool processingPEPipe materials, superiorPENot prone to breakage in stretched and folded visibility, with strong resilience and bright cut color. ExcellentTubes feature symmetrical flanges, solid, smooth, and flat; inferior products are prone to bending and breaking, are brittle, and the cut edges have a darker color.
3Welding joints
Weld joints primarily reflect the quality of the production process; good weld joints.PEThe entire circumference features a smoothly symmetrical rolled edge, with the root of the edge being wider, solid, smooth, and flat, and can be appropriately elongated. The rolled edge surface of inferior products has numerous air holes, the edges are uneven, and the edge shortens after being subjected to pressure.
4Flavor
High-purity raw materials produced from high densityPEThe pipes may have a slight plastic odor, but after cooling and sitting for a while, there will be no smell. The flame at the bottom after burning is light blue, with stable combustion and no odor. Low-quality products will have a strong, pungent smell, with black smoke and an unpleasant odor upon burning.
5Tensile elongation at break
Comparison of the product's length after tensile break with the original length.3.5Several times higher is excellent.Product
6Oxidation induction time
This is a laboratory test.PEOne standard test for piping materials is the duration of the auto-catalytic oxidation reaction under high-temperature oxygen conditions; the longer the time, the better the product performance.
