High pressure pipe and use thereof

摘要

A high pressure pipe of high density polyethylene material comprises an internal lining (3), an intermediate reinforcement layer (2) and an outer cover layer (1). The high density polyethylene material of the internal lining (3) is filled with a filling material (5). As a result, the mixture of high density polyethylene and filling material provides a higher modulus of elasticity of the polyethylene material whereby the resistance against higher pressures and temperatures is increased. Moreover, it appears that such mixture of a polyethylene material with a filler material is less prone to swelling and softening up under the influence of hydrocarbons.