Many people today aren't quite clear about the process of selecting properties. But in reality, there are even more details about real estate that everyone should be aware of. After all, the completion of a home depends on the integration of numerous components—especially piping systems. Whether the piping system is properly installed determines whether the home can function normally after purchase. So the question arises: What is the specification table for PE pipes? And how should we go about selecting PE pipes?

PE Pipe Specification Table

Polyethylene (PE) material, with its high strength, corrosion resistance, and non-toxic properties, is widely used in the manufacturing of water supply pipes. Since it does not rust, it is an ideal replacement for conventional iron water pipes. PE water supply pipes comply with the following national standards: GB/T 13663.1-2017 and GB/T 13663.2-2018, "Polyethylene (PE) Pipe Systems for Water Supply—Part 2: Pipes."

1. The outer diameter series includes 20, 25, 32, 40, 50, 63, 75, 90, 110, 125, 140, 160, 180, 200, 225, 250, 300, 315, 355, 400, 450, 500, 560, 630, 710, 800, 900, 1000, and 1200. Wall thicknesses are available in 0.63 MPa, 0.8 MPa, 1.0 MPa, 1.25 MPa, and 1.6 MPa. The inner diameter series of pipe fittings generally corresponds to the outer diameter series of pipes; typically, fittings are manufactured only up to a nominal diameter of 315.

2. The low-temperature embrittlement point of PE pipes is –70℃, making them superior to other types of pipes. In PP-R pipe materials, the ethylene content typically hovers around 3%. However, even after improvements, the low-temperature resistance of PP-R remains unsatisfactory; its embrittlement point is approximately –15℃, significantly higher than the embrittlement point of polyethylene pipes, which is –70℃.

How to select PE pipes

1. Check the appearance

When examining the surface of underfloor heating PE pipes, high-quality pipes have a smooth surface without any unevenness, bubbles, noticeable color differences, or impurities. Moreover, underfloor heating pipes are clearly marked with their model number, specifications, and brand name. On good-quality underfloor heating pipes, the printed markings are clear and resistant to fading or peeling off.

2. Check the feel.

Use your hands to feel whether the pipe has any grooves or ridges. High-quality pipes feel smooth and细腻 when touched, with just the right degree of softness and hardness. To ensure the reliability of the piping system, underfloor heating pipes generally should not have any joints. This necessitates the use of continuous-length pipes that are sufficiently flexible and easy to install.

3. Check the thickness

When comparing the flexibility and wall thickness of underfloor heating pipes, you’ll notice that the wall thickness of most underfloor heating pipes is marked as 2.0 mm. Some pipes are labeled with a wall thickness of 2.0 mm, but in reality, their actual wall thickness may fall short of this specification. However, high-quality underfloor heating pipes will have wall thicknesses that meet the specified requirements and match the labeled values exactly. If you’re unable to distinguish between two pipes just by looking at them, you can compare them directly—simply take two pipes and see which one has the thicker wall.

The above content primarily provides a detailed introduction to how the editor approaches selecting PE pipe specifications and the specific steps involved in choosing PE pipes. Although different types of pipes are used in various applications within residential plumbing systems, when it comes to the material itself, if a single material possesses numerous properties, its range of applications will indeed be much broader. Of course, recently, there has been considerable diversity in the dimensional specifications of PE pipes; therefore, when making your selection, it’s still best to adhere strictly to established standards.