▎ 摘　　要

NOVELTY - The utility model claims a PPR tubular product beta , which comprises a protective layer, an intermediate layer and a core layer, the inner surface of the middle layer is provided with a groove, the groove is provided graphene modified agent; the invention uses graphene modifier. The invention uses graphene as a sheet structure material of large area, and it has excellent physical and chemical properties, the sheet structure of the graphene, which endows the bottom layer having a certain barrier properties and weather resistance, the graphene structure of low content, adding in the pipe material has mechanical properties such as stretching the tubular material.