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Polyethylene exists in different classes and is often marked with a number indicating the minimum tensile strength of the material in N/mm² at 20°C over 50 years.
PE is a very strong and durable material with a good chemical resistance. It is highly weldable, which ensures 100% tensile and watertight connections. PE is UV-resistant and has a temperature range of -30°C to 60°C. For LDPE we recommend a maximum of 40°C and for HDPE a maximum of 60°C, with decreasing maximum pressure.
If the pipes are exposed to too high a temperature, the life span is shortened.
PE can be used underground and above ground and is frost-resistant. Larger diameters are preferably installed underground due to the stretching and shrinking of PE under the influence of temperature fluctuations. The material is easily recyclable and thus better for the environment.
Polyethylene generally has a thicker wall than for example PVC. This, in combination with the toughness of PE, ensures extra safety.
PE is resistant to acids, bases, non-aromatic hydrocarbons and salts and is also permeable to many gases and liquids. PE pipes can be used excellently where flexibility and a high impact strength are required.
