HDPE Water Supply Pipe

PE Pipe Common Specifications:

Convey20℃spring waterCAvailableCmin＝1.25

PE63Design stress allowable limit5Mpa，PE80Allowable design stress limit6.3Mpa。

PE Pipe Features:

1Corrosion resistance

Polyethylene is an inert material that can withstand the侵蚀 of a variety of chemicals, except for a few strong oxidizers, and is also not prone to bacterial growth. As is widely known, the reason plastic pipes have replaced steel and cast iron pipes is not just because of their...Pipe materialLower water conveyance energy consumption, lower domestic energy consumption, lighter weight, reduced water flow resistance, easy and quick installation, lower cost, longer lifespan, and thermal insulation capabilities, plus the added benefits of plastic pipes' resistance to corrosion and reduced tendency for microbial growth, making them superior to steel and cast iron pipes.

2Toughness and flexibility

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 a crucial 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 large number of joints and fittings.

3Low-temperature resistant

Polyethylene boasts exceptional low-temperature resistance.peThe low-temperature brittleness point of the pipe is -70℃PVC is superior to other piping options. During winter field construction, PVC...PVC－UPipes tend to be brittle and crack easily; in the Beijing area of our country, polyvinyl chloride (PVC) is commonly used for laying.PVC－UOne lesson learned from the pilot project of buried pipeline water supply is that it is not suitable to install polyvinyl chloride (PVC) pipes below freezing temperatures.PVC－UPipe laying construction is underway.

4Fracture toughness

Polyethylene boasts excellent fast crack growth fracture toughness. When fast crack growth failure occurs, the crack can...100～45m／sRapid expansion from several hundred meters to several kilometers causes damage to long-distance pipelines, resulting in large-scale leak incidents, as well as subsequent combustion and explosion (in gas transmission) or flood (in water transmission) accidents.

Strive for wall thickness and nominal pressure:

PEPipingCommon sizes typically range from16mm-1800mmBefore heading to the market, the nominal outer diameter is definitely confirmed, but in addition to the diameter, there's also the option of wall thickness, varying with different diameters.PEThe wall thickness of the corresponding pipes also varies; some are thicker.5Thicker wall thickness corresponds to higher nominal pressure capacity.

Appearance Assessment Performance:

PEPVC pipes are a recyclable and green option, but the properties of recycled materials (regrind) are still somewhat inferior to new materials, and can be substandard to some extent. Excessive use of regrind can lead to issues such as uneven pipe color, uneven surfaces, bubbles, and rough pipe walls. It's advisable to avoid such pipes when making selections.

National Standard & Brand:

National Standard:PEThe "national standard" referred to here is the national standard of the country's standards.GB/T 13663-2000Qualified standard pipe materials on the market are all accompanied by inspection criteria, which can be used to compare and verify their compliance with national standards.

Brand: The same pipe materials with national standards can vary in price, which might be attributed to the brand's benefits. However, pipes that meet national standards can adhere to normal construction standards.PETubes available“National Standard”Leading brand.

Key Selection Points for PEX Pipes:

PEThe quality of piping products mainly depends on the raw materials, processing equipment, and processing technology.

How to Select High-QualityPEManage? Consider the following aspects:

1Inspect the appearance

Superior PEThe raw material pipes have smooth and flat inner and outer wall surfaces, free of bubble indentations and discoloration defects. In contrast, poor-quality products usually have more granular impurities, with rough and bumpy inner and outer walls.

2Milling Strip

Strips cut from machine tool processingPEPipe materials, superiorPENot prone to breakage in stretching and folding, with strong resilience and bright cut color. ExcellentPipe materials feature symmetrical flanges, solid, smooth, and flat; inferior products are prone to folding and breaking, being more brittle, with darker colors at the cut edges. 

3Welding joint

Weld joints primarily reflect the quality of the production process; good weld jointsPEThe entire circumference features a smooth, symmetrical rolled edge with a wider root, solid, smooth, and flat, allowing for slight elongation. The rolled edge of low-quality products has numerous pores on the surface, uneven edges, and shortens after being subjected to pressure.

4Flavor

High-density, pure raw materials producedPEThe pipes may have a slight plastic odor, but after cooling and resting for a while, there will be no smell. The flame at the bottom after burning is light blue, burning stably with no odor. Poor-quality products will have a strong, pungent smell, and burning will produce black smoke and an unpleasant odor.

5Tensile elongation at break

Comparison of the product's length after tensile break with its original length.3.5Multiple times higher is excellent.Product

6Oxidation Induction Time

This is a laboratory testPEOne standard test for pipe materials is the duration of the auto-catalytic oxidation reaction under high-temperature oxygen conditions; the longer the time, the better the product performance.