MULTI-LAYER PIPE OUT OF COMPOSITE MATERIAL Russian patent published in 2010 - IPC F16L9/12 

FIELD: machine building.

SUBSTANCE: multi-layer pipe is made out of composite material corresponding to reinforced materials in form of alternate mono-layers with cross and lengthwise laying of reinforced material impregnated, for example with thermo-reactive binding. Binding consists of internal and external structure layers divided with a barrier layer. The barrier layer is made out of a layer of heat insulating foam applied on external surface of the internal structure layer and of an additional layer arranged between the layer of heat insulating foam and internal surface of the external structure layer. The latter corresponds to successively lain metal screens out of continuous bands divided with polymer material.

EFFECT: increased heat resistance of wall of multi-layer pipe.

5 cl, 1 dwg