PE80 has been widely used for gas, water and industrial applications for many years and is most commonly named MDPE (Medium Density Polyethylene). However, PE80 could also be HDPE (High Density Polyethylene). PE80 pipes are often rated SDR11 PN12 and have a minimum required strength (MRS) of 8.0MPa (Megapascal). You'll find this material close to home in products such as blue and yellow MDPE in pipe diameters of 20-63mm.
PE100 offers additional long term strength and performance over PE80 while allowing for thinner pipe walls for the same operating pressure. PE100 uses less polymer and provides for a larger bore and increased flow capacity. PE100 pipes are often rated SDR11 PN16 and have a MRS of 10.0MPa, and typically manufactured from HDPE or HPPE (High Performance Polyethylene). They are most often found in commercial and industrial applications with pipe diameters of 90-710mm.
PE80 and PE100 products are not recommended for continuous pressure operation at temperatures above 60°C for liquids, including sewerage and industrial effluents, or 30°C for gaseous fluids. PE100 has advantages over PE80 at low temperatures since it is extremely crack resistant down to -30°C.
MDPE pipe is only made from PE80 material and HPPE pipe is only made from PE100 material. HDPE pipe can be made from either PE80 or PE100. However the name and type of material is often used just for reference; the polyethylene grades (strength of the material) along with the SDR rating are the most important factors in determining the pressure rating and, therefore, the pipe required for the application.
1.Raw materials and density: PE80 refers to grade 80 polyethylene raw materials, while PE100 refers to grade 100 polyethylene raw materials. PE100 has a higher density and molecular weight, while PE80 has a slightly lower density and molecular weight, so PE100 is designed to be harder, stronger, and more durable.
2.Pressure bearing capacity: The maximum pressure bearing capacity of PE80 is 1.25MPa, while the maximum pressure bearing capacity of PE100 is 1.6MPa. This means that under the same working pressure, PE100 has a stronger pressure bearing capacity.
3.Wall thickness: Under the same pressure, the wall thickness of PE80 grade is thicker than that of PE100 grade.
4.Impact resistance: The impact resistance of PE100 is higher than that of PE80, which makes PE100 perform better in impact resistance.
5. Flexural properties: The flexural modulus of PE100 is 20% higher than that of PE80, which means that PE100 is also superior to PE80 in flexural properties.
6. Tensile properties: The tensile yield strength of PE100 is 20% higher than that of PE80, which makes PE100 superior in tensile properties.
7. Crack growth resistance: PE100 is also more resistant to fast and slow crack growth than PE80.
8. Application areas: Due to its higher pressure bearing capacity and better physical properties, PE100 is usually used in industrial applications such as gas and water pipelines and pressure vessels, while PE80 is mostly used in some occasions where the pressure bearing requirements are not high.
PE80: Suitable for pipeline systems with low pressure requirements. Specific application scenarios include municipal engineering water supply systems, indoor water supply systems of buildings, outdoor buried water supply systems and residential areas, buried water supply systems in factory areas, old pipeline repair, water treatment engineering pipeline systems, and industrial water pipes in gardens, irrigation and other fields. PE80 is usually used in low-pressure water supply systems due to its low cost and good flexibility, such as small-scale water supply scenarios such as agricultural irrigation and garden water conservancy. This type of pipe is mostly medium and small diameter coils with good flexibility, suitable for occasions with low pressure requirements.
PE100: Suitable for pipeline systems with high pressure requirements, especially HDPE pipe for water supply. PE100 has high strength and stiffness, and the maximum pressure can reach 1.6MPa or higher. It has excellent pressure resistance and crack resistance, and is suitable for medium and high-level water supply systems, such as urban water supply and industrial water supply. Due to its corrosion resistance and good durability, PE100 grade water supply pipes are widely used in modern water supply systems, occupying a dominant position in the market, suitable for various construction environments, mostly medium and large diameter straight pipes.Specifications
