▎ 摘　　要

NOVELTY - The application model relates to the field of pipe, providing a solar water heater and heat collecting pipe and heat collecting component thereof. A heat collecting pipe for solar water heater, comprising a transparent pipe and graphene modified PPR pipe set in the transparent pipe and coaxial with the transparent pipe, the transparent pipe of the inner wall and the graphene wall of the modified PPR pipe is filled with transparent and heat preservation A heat collecting assembly for solar water heater, comprising a water inlet pipe, a water outlet pipe and a plurality of the heat collecting pipe, one end of graphene collecting pipe of the modified PPR pipe is connected with the water inlet pipe, and the other end is connected with the water outlet pipe. A solar water heater, comprising the heat collecting component. The heat collecting pipe provided by the application, because the specific structure is set such that the production process is simpler than the existing heat collecting pipe, and also has good heat collecting effect. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) a heat collecting assembly for a solar water heater; (2) a solar water heater.