![]() ![]() At higher temperatures it may be necessary to apply reduction factors to MRS, and consequently MOP. These properties can be significantly affected by temperature, so at higher temperature the properties, including MRS, decrease. The properties of HDPE PE100 pipe are determined at standard temperatures of 20☌ or 23☌. Thermal Expansion Co-efficient: 1.3 x 10-4 ☌-1.Modulus of Elasticity (50 years): 200 MPa.Allowable Compressive Strength: 7.93 MPa.Hydrostatic Design Basis (HDB) Pressure: 1600 psi (11 MPa).Minimum Required Strength (MRS): 10.0 MPa (1450 psi).For the trenchless applications butt fusion is most widely used because this results in a smooth exterior profile with no protrusions that might cause difficulties in pulling the pipe into the ground or host pipe. It can be jointed using butt fusion or electrofusion to create a leak-free pressure network for gas or water. HDPE PE100 pipe is easy to install, light, flexible, corrosion-free and has a service life of up to 100 years. Stress crack resistance (sometimes referred to as slow crack growth resistance).Minimum Required Strength (MRS) – this provides long-term strength and creep resistance.It has an optimum balance of three key properties: PE100 is the third generation of pipe grade PE. ![]()
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