Composite thermal insulation pipe made of glass fibre reinforced plastic pipe and joint therefor

The utility model relates to a composite thermal insulation pipe made of glass fibre reinforced plastic, comprising a steel pipe, a steel pipe anticorrosive coating, a polyurethane frothing thermal insulation layer and a rigid glass fibre reinforced plastic anti-seepage outer shell. The utility model is characterized in that the rigid glass fibre reinforced plastic anti-seepage outer shell comprises in turn rich resin of the inner surface anti-seepage layer, secondary rich resin of the inner surface anti-seepage layer, a strength intensity structure layer and an outer surface layer. The utility model has the advantages of high strength, strong anti-seepage ability, temperature resistance, rigorous and reliable structure of a joint position, no leakage and no intake water and can be directly buried underground, or laid overhead, the service life is increased, and the utility model is suitable for various thermal insulation heating power pipelines.