HDPE Water Supply Pipes

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 many chemicals, except for a few strong oxidizing agents, and is not prone to bacterial growth. As everyone knows, the reason steel and cast iron pipes are replaced by plastic pipes is not just because of the properties of the plastics themselves.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 properties, and, due to its superior performance such as corrosion resistance and less propensity for microbial growth, plastic pipes also outperform steel and cast iron pipes.

2Tensile flexibility

Polyethylene boasts unique flexibility and excellent scratch resistance. The flexibility of the polyethylene pipeline system holds significant technical and economic value. The flexibility of polyethylene is a crucial property that greatly enhances the value of this material for pipeline engineering. Good flexibility allows polyethylene pipes to be coiled and supplied in longer lengths, thereby avoiding a multitude of joints and fittings.

3Low-temperature resistance

Polyethylene boasts exceptional low-temperature resistance.peThe low-temperature embrittlement point of the pipe is -70℃PVC offers superior performance over 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－UAn experience summed up during the pilot project of underground water supply piping is that it is not suitable to install polyvinyl chloride (PVC) pipes when the temperature is below freezing.PVC－UPipe installation and construction underway.

4Fracture toughness

Polyethylene possesses 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 massive leak accidents, followed by subsequent combustion and explosion (in the case of natural gas transmission) or flood (in the case of water transmission) incidents.

Strive for wall thickness and nominal pressure:

PETubingStandard diameters 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 for different diameters.PEThe wall thickness of the pipes also varies; some are thicker.5Thicker wall thickness corresponds to higher nominal pressure capacity.

Appearance Evaluation Performance:

PEPipes are a recyclable and environmentally friendly option, but the properties of recycled material (regrind) are still somewhat inferior to new material, and to some extent, they are not up to standard. Excessive use of regrind can lead to issues such as uneven coloration, fluctuations in height, bubbles, and insufficient smoothness of the pipe wall. It is advisable to avoid such pipes when making a selection.

National Standard & Brand:

National Standard:PEThe national standard referred to by "guan guo biao" is the national standard.GB/T 13663-2000Qualified GB pipe materials on the market are all accompanied by inspection criteria, which can be used to compare and verify compliance with the GB standard.

Brand: There is a wide range of prices for pipes that meet national standards, which might reflect the brand's value. However, pipes that meet national standard specifications can adhere to normal construction standards.PET管 the market“National Standard”We are the first brand.

Selection Key Points for PEX Pipes:

PEThe quality and superiority of pipe products mainly depend on the raw materials, processing equipment, and processing techniques.

How to select high-qualityPEManage? Consider the following aspects.

1Inspect the appearance

High-quality PEMaterial pipe production has smooth and flat inner and outer wall surfaces, free of bubbles, indentations, and discoloration, while inferior products often have more granular impurities, uneven surfaces, and pockmarks.

2Milling Strip

Strips cut from machine tool processingPEPipe materials, superiorPENot prone to breakage in stretched and folded views, strong tensile strength, bright cut color. ExcellentThe tubing features symmetrical flanges, solid, smooth, and flat; inferior products are prone to folding and breaking, tend to be brittle, and the color at the cut edge is darker. 

3Welding joint

Welding joints primarily reflect the quality of the manufacturing process; good welding joints.PEThe entire circumference features a smoothly symmetrical flange, with the root of the flange being wider, solid, smooth, and flat, allowing for moderate elongation. The surface of inferior products' flange has numerous pores, and the edges are uneven, with the flange shortening after pressure application.

4Flavor

High-purity raw materials produced with high densityPEThe pipes may have a slight plastic odor, but after cooling and sitting for a while, there will be no smell. The flame after burning is light blue, burning stably with no odor. Poor-quality products will have a strong, unpleasant smell, with black smoke and odor during burning.

5Tensile elongation at break

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

6Oxidation Induction Time

This is a laboratory testPEOne of the standard tests for pipes is the duration it takes for automatic catalytic oxidation to occur under high-temperature oxygen conditions; the longer the time, the better the product performance.