The invention relates to a fibre-reinforced hollow body (10) for channelling media, in particular chemically and/or mechanically aggressive media, for example of the chemical industry and/or the process industry, which has a base body (20), comprising a material containing fibres, and which has a protective layer (40) for protecting the hollow body (10) from chemical and/or mechanical attack. The protective layer (40) is formed from a fibre-free material or substantially fibre-free material. The invention further comprises a chemical composition for forming a protective layer (40) of a hollow body (10) for channelling media, which protects same from chemical and/or mechanical attack, in particular chemically and/or mechanically aggressive media. The invention further comprises a method for producing a hollow body (10) for channelling media, in particular chemically and/or mechanically aggressive media, for example of the chemical industry and/or the process industry.